This is what I'm using right now. It's still a work in progress. M1967 suspenders with an ALICE belt as the basic LBE. On the belt from left to right I have an ALICE double M9 magazine pouch with two Hi-Power magazines; a Canadian Pattern 82 C1A1 magazine pouch with two 20-round FAL magazines, to which the left suspender strap is attached; an IMBEL Type C FAL bayonet with frog and scabbard, attached using the sewn-in M1910 wire hanger; another Pattern 82 C1 mag pouch with two mags, attached to the suspenders using paracord as recommended by raf in the ALICE gear thread; an ALICE compass/bandage pouch filling in for a Blue Force Gear Ten Speed Ultralight dump pouch, which I intended to get and put there; an ALICE canteen pouch with 1 qt canteen and canteen cup; Indian-made copy of the M1961 field pack, to which I usually attach rain gear on the bottom using the straps, and to which the rear suspender straps are attached; a M1967 canteen pouch with 1 qt canteen; an ALICE fastex belt extender (covered up by the canteen pouch and holster); a Belgian 1950s pattern Hi-Power holster, which not only carries the pistol but also carries a spare mag and cleaning rod, attached using the wire hanger; a third Pattern 82 mag pouch with two mags, to which the right front suspender strap is attached; and an eestac Kywi single pistol mag holder that I got at Cola Warrior with a Hi-Power mag (which would be my speed reload). On the suspenders I have a Tactical Tailor small radio pouch with a Motorola Talkabout. Attached to the yoke and field pack, and worked into the rear straps, I have a Camelbak Thermobak, 3L. It's worn just low enough to clear the waist belt for my ALICE pack and is adjusted so that the belt fits somewhat loosely.
Still a work-in-progress. I still need to get that dump pouch and also an IFAK. I've settled on the Chinook Medical pouch and insert. I also will get another C1 pouch to carry a couple more mags. The canteens may get transferred to the field pack with the mag and IFAK pouches taking their place, or those items will go on the field pack, or some combination. Not sure yet, and one canteen could end up going; if I keep both, I want to get the canteen cup stove for the second one. I also need to find a better way to attach the radio, as it gets shoved in my face when shooting from a number of field positions, and that is extremely annoying. I'm also looking for the camo version of the faceplates, although I may just spray paint the ones I have in some drab colour. If I need to carry a bit more, I think the Tactical Tailor Modular Operator with a hydration pouch inside would make a good substitution for the Thermobak, attached in the same way. Another thing that I need to do is remove the plastic inserts that allow attachment to the Pattern 82 belt on the FAL mag pouches. I know people have done it, but I can't find any descriptions of how they did it online, and it doesn't look easy; once removed, the pouches can be fitted with ALICE clips, which will allow for their attachment to the field pack, to MOLLE webbing with the ALICE adapter, and allow them to be attached more securely to the ALICE belt. I had wanted an admin pouch, but there is simply no space for such a thing.
Previously, I had gone with the suspenders attached to a Belgian FALO/BAR belt. I attached a Belgian double Hi-Power mag pouch to the top row of grommets using the wire hanger stitched on, and using the bottom grommets the bayonet and holster seen above (although I had earlier used a wire hanger to attach my Bianchi M82 holster) and attached the field back to the adjuster strap, with the canteens (or a canteen and e-tool carrier) attached to the side and rain gear on the bottom, radio in the same place. But the adjuster strap isn't suited for gear attachment, and there were mods that needed to be made to make better use of it and attach more things (I wanted to put the webbing from the ALICE adapters in two rows on the empty spaces in front, inspired by the Dutch LBV you were using, remove the integral straps and the big metal buckles in front, and add belt loops to allow it to be used with the ALICE pistol belt). Before that I had something similar to what I have in the picture, but using the Bianchi holster, no single pistol mag pouch, and ALICE M-16 magazine pouches with the dividers removed instead of the Canadian pouches and started out with the ALICE Y suspenders and no Camelbak.
It's been an evolutionary process.
Previous BAR belt setup, earlier version:
Setup before the changes I made this past week:
Current setup: