Congrats on your 501st approval Dave.
As for the popper snaps if you mushroom the male head slightly it may help keep them in place. Something about todays poppers, though relatively accurate I don't think they have the same quality as yesteryear.
Spats, oh probably KB
As for the heat shrink I used to use polyolefin but I can't find it anymore in the size I need. Regrettably I've recently switched to PVC battery wrap.
The armor I've seen at GE looks to be the same armor is seen in Anovos ads and appears to be identical to some of the suits that are now in the publics hands. Unless the mouse is having someone else produce this armor I would say it is Anovos.