I have the Verizon version of this tab and was running a custom rom for the past year. Tonight I flashed back to stock and rerooted. I thought the bootloader was still unlocked but apparently it's not. I tried to flash a recovery and failed. Tried to unlock bootloader and failed with the only image I could find to do so.
So I'm left with a device that gives me an "unsupported...take to Verizon" message when I try to boot into recovery. I can still boot into download and get into the OS that way though.
This device isn't that big a deal to me and I don't plan on flashing anything in the future. Is not having a workable recovery going to be a problem?