Tubeless ready rims and tyres is probably the way forward for mountain bikes eventually when it gets consistent, cheap, and widespread. Effing about rim strips and regular tyres probably isn't.
Fitting rim strips can be an exersize in futility, you're trying to make air tight a rim that wasn't designed to be, with a tyre that wasn't designed to be either. You may get lucky, and it'll go straight up, you may get one go up, and the other after doing the same preparation will just refuse, and you'll be down the garage, whatever, every time you want to change tyres, you have to run the gauntlet of not knowing quite how it's going to go...
Whilst there are benefits to low pressures in mountain bike tyres, IMO they're more obvious to the DH brigade, you loose a bunch of weight, you get supple and grippy tyres, and a massive reduction in pinch flats. For the XC set it's less clear, single ply tyres at really low pressure are a nightmare of wibbly-wobbly uncertainness going round corners, and I've never really honestly said to myself "You know, I need more supple tyres that offer more grip, and yet rolls faster over off-road terrain". Now, I'm not saying it wouldn't be nice, but it's not killing my riding enjoyment, you know?
I'm yet to be convinced that it offers enough thorn/flint puncture protection in proportion to the faff quotient that comes built in, now some-one will uncountably come along and say they've been puncture free for 10 years, there were a million thorns in the tyre and women find them irresistible etc etc, after going tubeless, but I've yet to personally see a tubeless wheel that hasn't failed, and at that point, usually trailside, usually in the rain, you're forced, like the rest of the world, to fit an inner tube, so you still got to take all that stuff with you, only now you're covered in latex, so not only do you look like you got over excited about changing a tyre, it's a right f*&%er to wash out of your shorts.
Decide how much inner tubes really honestly piss you off, then decide if you want to swap that faff with another, costlier, messier, and ultimately not really all that much better system.
Or maybe I just fitted it wrong and chose the wrong tyres, who knows, eh?