We have those built into the lockers at our school. It's gotten to the point where I can open it without looking at it though, dat muscle memory
Now you mention it, no.
This, we have keys.
Rotary combination locks are wayyy harder to hack than the regular 3-combination scroll locks, but I wouldn't put either on something that truly had value. Only lockers and the like.
Seriously, rotary locks aren't that hard to open, I have no idea why people claim to have so much trouble.