Oh yeah, I use a bunch of different loadouts, but right now I am in love with this one...
MPL (I think) SMG with RDS (used a suppressor forever, but just switched to RDS)
CZ75 with suppressor (need to switch this to crossbow :\)
Frags or Tomahawk (really love getting tomahawk kills lol)
Smoke nades (haven't bought anything else yet, thinking about getting Nova gas)
Sleight of Hand Pro
Marathon (not pro