Efren's "Z" shot against Strickland is arguably one of the most famous kick shots in 9-ball. Are you saying he wouldn't have attempted this shot if he had to call the pocket? In interviews later on he said he was just trying to hit it, but he knew it had a chance of going in. Knowing that, why wouldn't he have just said "5 ball, corner pocket" and accepted the slim chance he had of actually making it?
I still haven't heard what kind of creative two-way shots are commonly seen that would be lost in a call-shot game. Call-shot/call-safe, yes, but not when just having to call the pocket and the ball you want to fall into it.