If you can only use one at a time -_-, a total opposite of DOS games.
Help me understand...
PS: One might actually say "it's all about choices & consequences", but what fun is it to have only one action per round and not being able to utilize your character potential... ( I have 0 knowledge of DnD system, sorry ).
I hope they will create a Lone Wolf mode, where you get 2 actions per round or an extra action every other turn.