I just tried out the one wrap on my aws belt with tall rifle pouches, i previously had itw fastmags on the aws molle adapters. The one wrap is nice and secure and its nice that you can move around pouches easily, still up in the air which set up i like better. The fastmags put the mags pretty high probably at the same height as short kywis would and I had some flop with it being quite top heavy especially with 40 round magpuls.
The esstac talls drop it quite low and would great for running 40 rounders all the time, but does only leave the top of 30 rounders to grab and probably would not fit a 20 rounder, so I may try the mid height ones one day when funds allow.
But one wrap is definitely the way to go with the kywis, I wonder how they would work with g code scorpions