Stretchious mentioned it here
StretchiousLeader
“Just as an aside to this… for those that instantly fall back to the “you want to make this game creative… you should just wait for creative mode”… just bare in mind that Survival Mode is on the cards as well, so that same fallback argument could also be used for you.”
I have heard some similar rumblings also and I think it makes sense. There are players that seem to very much want a PvP environment and this might be a way for them to get it without having to change the main game.