Rogue Asn Spec, how do you feel about it?

Hey everyone, i'm new around here but wanted to get some thoughts on how some better players feel about the Asn spec for MoP.

I've been playing a sub rogue wince Vanilla, love the way it plays, leveled with it, pvp with it, etc.. Finally came back at the end of cata with a friend who only raided, i've never raided before. So here i am slowly swapping my Ruthless pvp gear for PVE stuff. I've been playing sub getting 17-20k DPS in LFR DS, not used to the PVE rotation and what not, so i decided to swap to Asn, and use a geared rogue friends advice. Turned my 17-20k DPS into 55-65k DPS. I'm loving this Asn spec, how do the rest of you feel about it? Very very easy to play thats the only draw back i see.