And I'm snagging a board from 42.tar.gz as well. If I'm going to dive into Cherries, I'd better try the "worst" one out there, if I don't like it the switches only get better. The stiffness shouldn't be a problem for me, as my Daily driver is an M13, and I used a 1391406 for many many years as a daily driver.
I think my potential problem is if they have "rattly" caps. That, no matter how good the switch is, makes it Game Over for me.