[haus]

You can try installing practically anything you want on any ROM, but it is possible that there will be a conflict. Since you're hard resetting anyway when you flash the ROM, unless the chef explicitly notes that SPB mobile shell won't work, you might as well go ahead and try. Since you're on Verizon, your TP has limited memory, so that might affect your ability to run 3rd party software (that's as much a warning as a ding on my former carrier - sorry!).

No harm in trying, anyhow!