Thanks for the review, Chyros! Your excellent YT videos have been the cause of many 'splurges' on vintage keyboards this year.
I have a mint condition Ultra TP (which is like yours, except it lacks all the cool programmable keys, DIP switches and has a Windows key) I recently bought from Omnikey guru Robert Tibbets for quite a cool chunk of change. It's basically the same as Vectrex's, except I have a full row of SF keys on top.
While the keyboard itself is beautiful, I'm not as pleased with the feel of the switches, however... I have my suspicions that these might be Fukka/Fuhua simplified White Alps clones, because they sound (and feel) *a lot* like the Matias switches I swapped into my older Omnikey 101. And I think I read elsewhere that they did switch over to Simplified Alps toward the end of Northgate's lifetime, and CVT supposedly used even crummier Alps clones in their knockoffs.