I haven't in the three years of pump play have ever used AT but I do admit it is nice to have specially against the electro guys.
I heard the new Pyre has a s rod that prevents twisting. It will take me a bit longer to grab a brand new Pyre..
I think my first step away from snipers is going to be towards a Sterling. Next I'll see if I can get a Carter or a Pyre. Like Toymachine said, it's always nice to have a variety of guns and I do loan my pumps to convert more folks over.