[tobeychris]

Yes and no.
Most of the applications should be compatible with our devices and a good portion of the custom applications are taken from those GSM ROMs.

If you can get those roms back from an nbh to a packaged kitchen (assuming the chef hasn't specifically made it so you can't) then you can simply copy any folders from the OEM folder over to your own OEM folder in the Diamond Kitchen, and there's a good chance they'll work if they're compatible.