I'll try to post some pics off USGG set ups as well. Nothing fancy, especially the one I use for IPSC.
But Surf is spot on. Once you Velcro the outer belt on, it's not going anywhere. I also have their pistol pay pouches and AR mag pouches on my training belt and they are really well made. I don't know how long it takes to fabricate one pouch, but if it was me doing the sewing, I think it would take forever.
The main reason why I didn't use it in my last class the temps were in the 30s to 50s range and rainy and even snowing, so I wanted something that could wear on the outside of the layers, so I took my HSGI SGPB.
Most often, when I'm shooting here, I'll use the USGG set up since I usually don't need to wear warm layers.