Adorable Furry Hombre
IME they ride like crap (think tooth rattling overinflated tubed clinchers in ride quality). Best done only in an emergency. Had to do it with Schwalbes and Hutchinsons before. Not a fun ride.
Vittorias are made differently, and given higher TPI, they might ride better with a tube in them. BikeRadar noted they were quite fragileI could be wrong but I don't think some of those tubeless tires that sucked were that way due to the bead. The Vittoria ones have a real high TPI so wouldn't think they'd ride like crap as Hutchinsons did.