I play an operative but never tried the concealment spec so the nerf really did not hurt me all that much. As a lethality ops i find it way more amusing then just knocking someone to the ground. Loling all over them and then poofing and repeat.
Pretty boreing if you ask me. This nerf just helps the Ops class as a whole, letting all the baddies leave and let the true players shine.
Now i am by far not the best pvper out there but i do like to say i can hold my own, My advise to the people wanting to try out ops. Go for it, dont let the baddies stop you from playing a class your curious about.