Great luck with non-UST tire / UST & Stan's ZTR355 Rim
I have a Maverick ML7 w/ DUC fork (someone above mentioned wanting something burlier for a Maverick) and I have two sets of wheels with the same hubs & rotors.
One set is an x3.1 (819) front and a 317 rear with Stan's rim strips. I have been using non-UST Kenda Kinetics Stick-E 2.3's since November last year. The rear almost has no tread, the front is OK. I use these for 75% of my riding. With the Stan's tubeless setup, run at 35psi, I can climb uglier and more loose trails than with the lighter setup, described below...even though there is only 1mm of tread left in the middle! And going down is more fun, don't have to worry about what I'm gonna hit as much. Air loss is non-existant. I used 2 1/2 scoops of sealant initially and have added 2 1/2 scoops two more times, about 4 months apart. The second time I removed a 1" latex ball that my 3 year old thought was fun to bounce around
The other set are both Stan's XTR355 rims, my lightweight/race setup. Only have had them for 2 months. Front tire is non-UST Kenda Blue Groove 2.1, rear is non-UST Conti Explorer Pro 2.1 (not ProTection). They are noticeably lighter on climbs, they accelerate fast. Only bummer is I have to temper myself when wanting to launch down stuff. I lose ~5 psi a month on the front, and zero on the rear. The Conti went on very well, super easy. Still undecided about the 2.1 BG. For the weight, I'd rather have a Vertical Pro or Explorer Pro which I think grip better.
Someone also asked about using regular tubes. I've done that 2 times after ripping the sidewalls on two separate Hutchinson Python Golds. Won't be buying those again for rocky Colo trails. Anyhow the tubes did not stick, and it wasn't even messy. I rode one for about 3 weeks like that, with a Powerbar wrapper inside to prevent the tube from sticking out of the hole and it still did not stick.
Since I don't have a compressor, or a great floor pump, or a garage, I just use a local gas station after soaping the beads with dish soap. I get there, put some water on the beads, put the Stan's solution in, use the presta adapter and voila, snap, aired up and I don't even have to clean up the mess! The environmentalists here in Boulder might not like that, but hey it's easier on the environment than their oil-leaking '83 Subaru wagon! Kidding, actually it's very little mess.