Hmm. I would run tubeless with a UST tire (which are ridiculously tough) and carry all the normal spares. But you probably won't need any of the spares when running tubeless with sealant, whereas you are nearly assured of at least one flat if you have a tube. A big risk is a pinch flat, which can't happen on tubeless. To counter that risk you can run higher pressures, which will decrease your traction and bump compliance.

Anyway. They make several Plus series MTB tires: Smart Sam Plus and Marathon MTB Plus. I've used the regular Smart Sam with mr tuffy liners and standard tubes, and never had a puncture. These types of tires are adequate for all-around use but they won't compare to the traction of something like a Hans Dampf when it really gets rough.