[ExT]

Sounds like this would be something that would make it easier for:

a) the person going all in not having to push out every last chip if he happens to have a good sized stack

b) others at the table to know who is all in and who is calling without having to figure out how many callers, etc.

The reasoning above (for the camera proof) sounds like a good reason since most people who go all in with alot generally don't push everything out there until it comes time to having to make a count, make sidepots, etc.