I ran Tubliss on a couple different bikes and always loved it, but it does require more care mounting & dismounting, plus checking the pressure of the inner bladder that acts as the rimlock before every ride. For your XTrainer, I think Tubliss is a no-brainer, you can run super low pressure, get maximum traction and not worry about tearing up rims, etc. I've heard the product has gone thru some revisions and improvements to make the inner bladder last much longer, so that's great news.
I've heard guys say that if the inner bladder fails, you should carry a normal tube... but I never had issues.
I had a flat front tire on my DR650 years ago, found the hole, plugged the tire and we were back to riding within minutes. I LOVED the Tubliss setup after that. I have had 3-4 flats on the front of my 990 Adventure and strongly considered running Tubliss on it, to solve that problem.