I just tried my Absolute Black 32t ring with my XT 1x11 setup for the first time yesterday. I'm used to using a 2x10 with 22t granny ring and staying in the two smallest cogs on my 11-36 cassette for the steeper climbs around here, but was surprised that I didn't have any issues at all yesterday.
It's barely noticeable just pedalling around and I'm sure it doesn't make a giant difference, but I would definitely buy again.
Price was about the same as any standard chainring and I was ready to pick up a round 30t if I wasn't perfectly happy with this.