Very, very interesting -- and if I habitually wore a hat, I think I'd have to eat it at this point. :)
One of the things that caught my eye about FN was the reason for their fidelity to the US civilian market: unlike government sales, it's reliable and fair (you don't have to bribe us to buy FN :-). Hmmm, now that I think about it, I'll bet the US civilian market earned back the development costs for the P90, it's intended market disappeared (designed to penetrate Warsaw Pact body armor with ammo we can't buy) and other sales have been limited.
But Americans just love the little puppies (hey, it's really innovative and looks like a weapon of the future, I'm sure it's use on StarGate didn't hurt, and it's well featured in anime) ... if I could afford a "fun" gun I'd buy one in a second.
Plus I don't like direct impingement (the AR-10/15 design) so I've paid close attention to all the alternatives, of which there are many. And e.g. bought a SIG-556, which is the love child of a SIG-551 and an M4 (stamped steel upper, forged aluminum lower (which shaves off a pound which my RSI limited arms really appreciate)) and was impressed by the aftermarket parts activity for this fairly obscure gun (they'd only sold 10s of thousands).
Plus buying a mousegun is next on my list, after .380 ammo becomes available again.
Motive was to do a self study in that area. I am very sure that security concerns at all levels will only increase over the next 10-20 years and there is a scope for lot of innovative stuff.