After reading in different forums....it appears that no one can say for sure. All we can hope for is that some genius Developer will solve the equation for us promptly. I just hope it doesn't take too long.
I don't think anyone will root this phone until they get to check out an OS update. Somewhere in that 2.2 update is a key to unlocking the phone. Some very smart guy will figure it out, I'm sure.
An encrypted bootloader means I will never buy another Motorola phone. Plain and simple. That would just confirm the rumor that all future devices will have encrypted bootloaders