many of the newer wheels (within the last few years) are tubeless compatible. Yes some wheels don't work with tubeless, but most will which is unlike tubular tires that do need different wheels (unless you buy tubular clinchers of which I have only ever seen one brand/manufacturer).
I went from 25mm Continentals to 23mm Schwalbe One tubeless and the ride is awesome. A good bike shop will tell you if your wheels will work with tubeless tires.
I am interested in the Vittoria tubeless tires too
oh and I am 360 pounds, and going tubeless meant no more pinch flats for me