Originally Posted by AngelArs
Difference is that you will void
your warranty. Not so with the Developers Edition
But as people have said, as long as I can get into fastboot the unlock can be reversed with no sign it was ever done.
Anyway, they only sell the dev edition in one territory, so it's a moot point for a lot of us. And the dev edition is still S-On, so I don't know whether it's warranty covers changing that (but as that's not something you can do through HTCDev I might guess not).