UST 29er and light weight is not yet able to be said in one sentence... if you get a wheelset that is set up to be tubeless you can avoid the rim strips (this has nothing to do with the actual tire though)- there are quite a few of them out there now but most are sold as wheelsets not rim only.fluffypanda said:
Your best bet tire wise is going with a tubeless ready tire which will generally have a tubeless bead but require a sealant to actually be run tubeless(thought some hold air quite a while without it). Schwalbe Racing ralphs come in a TL version for 2011, Specy Fast tracks come 2bliss and quite a few of the Bonty tires come tubeless ready as well. Even with ust adding some sealant is helpful to ward off air loss from thorns etc..
Actual UST would be Maxxis Ardent and Crossmark as well as a few Geax Sagaurro's are floating around out there... light.. no not so much-