It's even easier to do with Hybrids. I know a lot of Protection Paladins are taking the opportunity to try Retribution for a while, and horror of horrors, I've even known a couple Feral Druids who have actually tried Moonkin form, if you can believe it. I find myself strangely unwilling to respec, so I'm sticking with my Unholy Death Knight, Feral Druid, and Beastmastery Hunter for now.
How are you doing on talents in Wrath? Have you decided on a build? Are you throwing money at constant respecs? Have you changed your spec 180 degrees from what it was in Burning Crusade?