Obviously not as popular as bow SAMs, which aren't terribly popular anyway, but I do think it's worth mentioning. Now it seems to me they gave Guns to NIN for the same reason they gave bows to SAM, more of a historical nod than an actual gameplay option. Now I know there are a lot of people that say "If it's not better than current WS/build then there's no point in adding it." I disagree. I wouldn't use it for tanking, but for having fun, which is what a game is meant to be, I might play around with it.

For this to be viable though, there would need to be a few changes.
- NIN would need to be on more guns (matchlock rifles!)
- NIN needs more ammo choices
- NIN should get some native marksmanship WS (Namely Slug Shot, Detonator and Numbing Shot plus some low level WSs)
- Maybe have Sange apply to guns too
- Maybe up Marksmanship skill to a B or so

Again, I know it wouldn't improve NIN's current abilities but it would make it more versatile and give another play option for fun.