Silk tubs make an amazing sizzling sound! I have this on a 300g rim (Mavic GEL280):
The complete wheel with tub is 880g, with no carbon or ti.
Not only do tubs have a comfortable ride, traditional tubs are the best looking tyres of all time. I mean just take a look at this:
Actually I prefer silver polished rims but the tub was on this rim when I took the photo.
Re:"tubular clinchers", all the disadvantages and none of the advantages, of both tubs and HPs. Heavier and less comfortable clincher rim, cannot use spares tubes and/or puncture kit for multiple puncture repairs on the road which are lighter than a spare tub or two, cannot be repaired easily (in the case of Tufo tubs, not at all, i.e. you can't patched it). And...Tufo tubs are ugly.
Lastpubrunner: please rename this thread to "Tubular tyres and wheels".