Continuing with the topic of how to play rimshots and crossticks separately or how to get a 3 zone snare with a 2 zone pad, here is one stock snare with a velocity switch, try it and let me know if it works with your 2 zone pad, you should get a crosstick sound at lower velocities and a rimshot sound at higher velocities.
https://1drv.ms/u/s!Apbbfhss1Va_gd5cw0kxLqqFOsH7Fg?e=gLYtcm