Olympic rules will be ten point soon. World Series Boxing is also amateur fighters fighting under the 10 point must system without headgear.
Traditionally no, but now that AIBA has decided to try and ruin amateur boxing they're switching to the 10 point must and removing headgear for Open class.
In the Australian Amateur boxing League the lesser of the two am boxing leagues over here they use a round based scoring system. I've had two fights under it, although I think it works better in a practical sense it is a bit flawed.
fair play, i actually like it more too. The only problem is that it favors the speedy types over the power types.
I know it has happend and it may be returning but the 10 point must system that was in place was for who landed the most shots. So you couyld get droped and still win the round if you landed more.