Just did my first ride with the 268, and it feels great. I barely feel side winds (also because of the 38mm depth wheels), which is lovely.
Compared to my speeder bike, it feels a lot more stable and comfortable (heavily dictated by the spacers and less aggressive geometry).
In terms of building obstacles, there were no true issues, although I did have to drill the FD guide in the frame, so my shifting cable would fit.
Will get back after I did more rides with the bike.