I think, at their best, I'd rather have Storen as closer over Clippard. I just don't know if Storen has his consistency and health completely back yet, that's not something I think I'd be privy to. Clippard's a great pitcher, no doubt, but he makes things a little too interesting too often for my liking; At least more than I think Storen would.
What with Storen being out so long and Clippard doing well as closer though, I think the current setup is what we'll stick with through this season, barring an HRod-esque meltdown from the Clip.