Let the hive mind of Engadget get that for you.
"I just switched to Sprint from Verizon about three months ago for the Pre. Then I went for the Hero about a week ago. Now, I miss my hardware keyboard and am thinking about switching to the Moment. I am still able to switch back to Verizon if I want and get the Droid when it arrives. Should I just trade up to the Moment when it comes out, see if I like it, and if not switch to the Droid? Or something else entirely? Help!"
Umm, the iPhone doesn't have 3G neither has there been any mention that the European version will either. So no, you wouldn't see 3G. You might see EDGE but the European network is not as EDGE plentiful as the North American one.