Tried one at the weekend at the CyB enduro. I really, really want one. I grinned pretty much the entire way round the test loop. Quite hard to explain really, it felt like a normal mountain bike (as opposed to a fat bike, which definitely feels like a fat bike) but just let me pedal everywhere, up, over and down, very quickly, throw the bike around and generally have a lot of fun.
It’s hard to isolate what is the tyres, what is the geometry etc, but I suppose in the same way a full susser means you don’t have to concentrate quite so hard on the soaking up the bumps and can focus on steering, grip and so on, this did the same with the grip and let you focus on throwing it over things.
Perhaps the most noticeable thing was that going back to my solaris (reasonably well tyred itself) felt like the usual step of going down to the cross bike on a rough trail.