Ehh, I kinda have to disagree that this team won't be viable in BW2. As long as we replace Slowking with Lanturn, we should cover most of the new threats; Nidoqueen is checked by Cryogonal, Escavalier is walled by Steelix, Imposter Ditto doesn't do much against this team, etc. Actually, I might try it out a bit sometime once things have settled down again to see if it still works. I guess we'll just have to see!
(also @Bigblue: Misdreavus still checks Cinccino and Slowking still checks Sigilyph ;p)