international roaming on verizon?

I'm looking heavily at ditching my blackberry for a droid, specifically the Pro. But i'm nervous about international travel (europe and asia) when roaming. With Verizon they let you bump your blackberry plan to cover email when overseas (extra $20/month i think) but i think that with no BES all email is treated as data usage which is much more expensive (pay as you go).
Anyone have any insights on this? I've been hunting various forums and cant seem to find this anywhere...