D,
For what it's worth, here's my 2 cents. I have the FP, V3 armor as well. I started out using velcro actually. There are pros and cons. I liked that the velcro held all of the time, and never failed. The biggest plus to the velcro was that it actually gave the armor some extra weight, and strength by adding it completely the backside. But the velcro didn't hold it as tighly to the vest as I would have liked. You could also see the velcro from cetain angles while moving. The biggest draw back was that the "hooks" on the velcro ALWAYS seemed to grab at the wookie braids. I was always fixing that.
So, I ended up switching to snaps. I liked the upgrade from the start. The snaps hold the armor tight ot the vest. It was just a bit more difficult lining the snaps on the vest with the snaps on the armor. It has to be perfect when you do it. Believe it or not, I ended up using hot glue to hold the snaps to the armor. If you don't over do the amount of glue, there's no chance of melting the armor. You just need a small dollup on each snap, and you have about 3-4 seconds before it actually sets. Then if you HAVE to remove the snap, it WILL actually still come off of the armor with enough pressure. If yo u use super glue, I'd be worried about removing the snap later. My only issue with snaps is that they CAN detach from a severe stretch or movement during a troop. No big deal, just a quick press and re-snap, and you're in bussiness.
I was considering moving over to screws, but I just haven't had THAT many issue with the snaps. Hope that helps.....