IMO, I personally love scoundrel. I play a scoundrel on The Bastion PvP server. Honestly, I haven't been beaten 1v1 to date, even I beat a lvl 40 sorcerer. I love being able to back blast people, and hit for crazy dps and then if i'm feeling the heat in a 2v1 I stealth out, CC and open again.
Overall I felt the Gunslinger lacks mobility, and IMO it's pretty boring sitting in the same spot just spamming a rotation.
(Scrapper spec)