To clarify a couple of things. The M11-A1 is a essentially a p229 slide with a p228 frame. It has night sights and the SRT trigger standard. It is an excellent handgun. Size is similar to a Glock 19.
Regarding the ability to comfortably carry AIWB a gun with a hammer, I often carry the p224 midline (12 o'clock) and it does just fine and conceals very well. With the 224 you can carry a p229 or 226 magazine as a reload, I carry a 20 round 226 magazine for my reload when I carry it. AIWB has always been the most forgiving of heavier guns for me, so the increased weight of the SIG over my Glocks isn't noticed when carried in that position.
To the OP, only 1911s have 1911 triggers, you will never get anything else like that. Get past the crutch of the 1911 trigger and just practice a lot with other stuff. Don't try to make your Glock trigger super light. In my mind SAI "tier 1" trigger + VG2 + appendix carry = disaster waiting to happen.
If the trigger is the only thing bothering you on the Glock then my best suggestion would be to dry fire twice a day every day, and shoot at least once a month, hopefully way more than that if possible.
And because I feel like the thread needs moar picz.