Not OP, but I have a Model 100 and I just assigned mouse keys in Chrysallis. It used to be the case that you had to build your firmware to change the speed, but

Not OP, but I have a Model 100 and I just assigned mouse keys in Chrysallis. It used to be the case that you had to build your firmware to change the speed, but now that's possible through Chrysallis too. I don't use them very often because I don't mind using a trackpad, but it is useful sometimes.