Bowwild: a razor blade will peel the fletches right off and not damage the aluminum.
If anyone has mentioned the slick shaft surface of the FMJ, I missed it. The high tech pro that sold me my first FMJs told me the surface is so slick that I would either need to wrap, dip, or sand it to get the fletching to stick. That was good advice, but I've not lost too many when careful about the cleaning and gluing process. Never lost any when fletching over wraps. Recently I bought a couple dozen used FMJs that were fletched over bare shafts, and I thought "this is great, he uses exactly the feather configuration I do!(4", 4 fletch, 60-120 degrees, helical)." Not so....virtually all those feathers peeled right off after a few shots!
I kinda think this is an advantage....9/32" diameter and a really slick surfact, good mass weight, and toughness is a hard combination to beat. However, you guys imply they can not be damaged: not so. I hit some stuff I wasn't supposed to in Africa....that aluminum skin can shatter near the end on a hard hit against rock, etc. It seems a bit more brittle than the alloy used in Easton aluminums.
I've got a boatload of arrows of every material, but if I lost them all tomorrow, I'd simply go out and buy FMJs, and consider it done.