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!"
gmoney:
Actually from looking at the pictures on the box, I think it doesn't look chrome on the box due to the print+picture. It looks to me that it actually has the same look, but the print+picture makes it look like it doesn't.
Tim/Gin:
I'm guess that you can, and will be able to use this on Cingular if you unlock it. Danger builds the Sidekick and has a deal with T-Mobile. You can in fact use the sidekick on other services, but you lose out on a lot of the services. With the BB Pearl/8100 it uses standard Blackberry services which are available on Cingular. That would be a guess though, but based on the fact that I have seen a cingular one unlocked and used on the t-mobile network without any problems before.