I've got a PTSD crippled Vietnam vet alt, SGT_JOE_CHARLIEEVERYWHERE. The build is similar: Xbow infantry, though mine's an xbow/thrower hybrid (for grenades, you see).
Don't bother with using two xbows. It's easier and faster to just reload one quickly than lug two around. The damage from light xbow is meh, but it's annoying, and its pierce, which means you rarely glance. It can be fun to hide behind your infantry's melee line and shoot into melee via first person, aiming at heads.
