I’ve got the KH Zero (the first edition of the saddle…) on my 36. I’ve got the handle bars set up. In my opinion the Zero (with handle bars) for long distance is brilliant. As you probably know it takes a little bit of time to get used to it but once you do is fantastic. ‘Miles’ better than a banana shape saddle!
I’ve never tried it in any of my Munis (24/26) so no idea what is it like for that type of riding. In my Munis I’ve got the Stadium saddle set up instead (without handle bars) and it works really well. The great thing of the stadium saddle (and also the Zero) is that you don’t get that annoying rubbing on your thighs if you are cycling ‘standing up’ when tackling rough bits in Muni.
On the 36 I would definitely recommend the Zero saddle
I have the KH One on my 27.5" muni, and liked it enough to get another for my 29" road wheel. I haven’t tried the Zero.
I have a grab handle on the muni that lets me put some weight forward of the seat, and I think it encourages a slightly more “bike like” riding position, which is kind of the point of the saddle. It seems fine for the cross country style riding I do on that wheel. For my rougher terrain riding where I’m standing up more, I prefer my semi-flattened KH freeride, but the One would be OK. I don’t slide off it or anything.
I don’t have handlebars on the 29" road wheel but I’ve been thinking about installing some. The saddle works OK with no bars but I do wish I could lean forward and put some weight on the bars, more than the saddle handle will allow.
I’m in pretty much the same position as Moslki - I have the Zero on my 29er guni which gets ridden exclusively on road and the Stadium on my 26er muni. The Stadium is definitely the best saddle I’ve ever ridden (for me - lots of other people don’t seem to like it), though the Zero probably is better for use on the guni where I have bars and tend to stay in one position. I wouldn’t like to try using the Zero without bars - with the complete lack of curve it doesn’t seem to work that well without. It also took me a long time to get used to the Zero - at one point I managed to trap a nerve riding it. It was only very recently that I’ve finally got to the point where it feels preferable to a more normal saddle (and I’m finally glad I put the effort in).
Yeah the “finished” versions look like a piece of foam stuck on there and wrapped in duct tape. I think it looks kind of cool for trials/flat/street where the seat is mostly just a handle anyway, but for muni or road???