yes they fit, i was very happy them - the version i had on the SLR's was pretty much the same as the Supersonic 2.2 just a diff name
forget the UST version its too heavy, the protection version is okay but the ones i bought were not true 2.2 and didn't have the same ride characteristics. for the lightest option just use some sealant with the SS version, i was using 60g (one stans scooper) of Hutchinson Protect Air it takes approx 6 months to dry out, scoop it out then add some more - 60g is alot lighter than any innertube!
on another wheelset i have Race King Supersonic 2.2 mounted up in Feb 09, done 1400 miles on them now & they look barely 1/2 worn