I made a pair for myself a couple years ago, and like them for standoffs on the workbench. However, I still haven't figured out comfortable mechanics for using them with actual Japanese saws. Nothing really feels comfortable.
Oddly, I can find a million tutorials on the Net on how to make sawhorses (if I have to see another person show off chopping the mortise for the feet, I'm going to go crazy). But how are these ACTUALLY used in practice? Refs to a good tutorial/explanation greatly appreciated.