The CZ-75B doesn't have the frame rails you really need to mount that sort of device... so the question is pretty much academic. (Typically, the attach-to-the-trigger guard type mechanisms are delicate, hard to install, etc. You need something you can keep mounted, or mount quickly.)
Check out the P-01, however.
Either approach, as best I can tell, can be effective. But you need to practice with it.