I think it greatly comes down to one's workflow and what someone is used to or not. I never had any sad surprises when using the multi-cam method but it may be confusing for some users no doubt.
I'm not saying that the actual camera lock is a bad idea. Might be helpful actually.
There is, however, one bug regarding the multi-cam workflow that is particularly annoying. Sometimes, switching to the additional camera, causes said camera to shoot off to LEO despite it having never been left there in the first place. It seems to happen at random.
It's a minor bug really but it does steal some time anyway.