James it is doable but with some acrobatics.
Utility tracks seem to not regenerate together with standard tracks with single press of the button, they have to be regenerated individually and they do not they have options for bar settings (which hopefully will be done at not too distant future). So, if you do not require changes at the bar (for Utility Tracks) and already have your composition laid out than it should be fairly easy and straight forward.

You do everything else as you would always do. Then, choose RT's for your Utility tracks, generating each utility track individually. Save song. Done.

For the next tune, you just open this, do a "Save As" and rewrite your chords, arrangement (for standard mixer tracks) tempo etc. For the Utility Tracks, you would have to regenerate them once, so they follow new chord sheet / tempo for the second tune. Save. Done.

There are a few BIG pieces of the puzzle that needs to be addressed, but Generating RTs on Utility Tracks already is usable feature!