The 32T fits the 256 easily. I'd bet a 34T will fit fine as well. A 36T may be pushing it, but I think with a spacer or two installed, it can be made to fit as well. That said, I really don't feel that I'm missing any gearing with the 1x11.
Warning: in getting on my soap box here...
If the climbs get hard, harden up and get stronger. But in reality, with lower and lower gearing, you just start to go slower. If you have the low gears you'll just be conditioned to rely on them. If you don't have them, you'll get stronger. Nothing is more humiliating than having an old guy on a single speed out climb you when you're sitting in your granny gear. It's all about hardening up.
I had some really steep climbs in the races I've done and at my longest race, even coming into the last climb which was over 900 feet in a two miles or so, with 95 miles under my belt, I was still able to struggle up the climb. You get used to it. If you don't have the crutch, you don't use it.
And on the other end, a 32T with the 10T rear cog will take me to ~24 & 25 mph on the street. Rarely do I need more speed than that off road. That's at-risk behavior!
I guess I'm a huge fan of the 1x11/1x10 stuff. I don't miss the extra gearing in the least. The deleted front derailleur is a liberating thing and allows me to focus even more on riding.
Sorry for the semi-off-topic rant!
Everyone is different though and I can appreciate that. But if you are used to climbing on a road bike, which sucks a lot, this 1x11 gearing is no problem.