Hmm. I am looking forward to seeing what OpenFeint brings to the table, though.
I already use Scoreloop in one of my games, and although I am not dissatisfied, they can still improve. Two things that OpenFeint has on iPhone that interest me are the achievements (this is probably the main reason why I haven't put P&T on Scoreloop yet) and turn-based push notification (don't know whether it is useful enough for what I'd like to do, but its potentially interesting). If they bring that to Android, I will be happy - if nothing else because the competition will help improve the services available to us developers (which again will hopefully result in better games).