I test rode the medium and large. At 5’10” I’m on the cusp of most bikes but certainly preferred the medium for Airdrop.
I think the climbing comment depends a lot on what you’re climbing. It’s a supple horst link design that outclimbed other bikes (including Bronson and nomad) on steep rough technical ground. However, because that suspension gives giving no matter what, it can feel a bit sloggy on tarmac or fire road. Having said that, a climb switch can work wonders and as its a mountain bike, I know what sort of climbing I’d rather compromise.
I was really impressed by them as a bike, a brand and a company and can’t speak highly enough of them.