I don't see Sammy making the Test side - he's more likely to be used in the shorter form of the game.
Darren Bravo is currently playing in Bangladesh for the A team, as some of you guys know, and is unlikely to get into the ODI side in the Caribbean for that reason. But I wouldn't be surprised if he's named to the Test squad, for when that series starts in June. That said, I think he's behind Deonarine in the pecking order. But it should just be a matter of time before he gets a shot....