people have tried this and have found that running low pressure like in trials causes the tire to leak air. In other words they suck for trials. Michelin or Maxxis with normal tubes on a wide rim is the best for trials.
i made a jimmy rigged tubeless set up with michelin tires a while back. as soon as you hit something slanted it jets out air when the tire rolls even a little bit. you can use them for the frant if you run higher pressure but i would say just go with a good set of treads and normal or thin tubes like martin said.