Possibly. Depends on your bike too, some people claim to have done it successfully but then, you never really know what that means, whether they have the full range of gears and suspension travel or whether they're on a hardtail or a chain-growthy full suss. I've got a short cage shimano on a 1x9 bike and I'm pretty skeptical, it's not got a lot of margin for that frankly never mind another ring.
I've been really impressed with the durability of XT, though, one of mine has taken an extended kicking and is still good as new. Covered in scrapes but unfussed. Only downside is that I've gone through about twice as many mech-hangers as I used to with my 9-speed wibbly wobbly X9!