I think you should get both ..
max out everything in rouge just can't get
a sub but whats better about both is that you
have a weapon for MvP ( Monster v.s Player )
and a weapon for PvP ( Player v.s Player) and
the daggers are quite good for giants to just use
the F keys to switch from dagger skills and cross
bow skills my rouges is quite good at leveling...
Or you can choose yourself to get crossbow and
and subclass up to you