Divided, I personally wouldn't use the machine gun mode of firing and it would be one more hassle to press x, switch weapon, press x in order to go into secondary mode for both weapons (Langes Messer & Longbow).
Secondly, archers have to stand and shoot over long distances in order to get reasonable accuracy anyway, if they're running and shooting they're going to be inaccurate and likely to miss their shots while running from the enemy, the main point where you'd use the fast drawing.
All this would do would be to make bows more like crossbows with the stand and shoot, only xbows can reload behind cover, can move while drawn back and are more accurate and higher damage etc etc.
It would mean that killing archers for melee would be easier I suppose, since they wouldn't be able to move quite as well but I honestly don't like this.
It'll make the game a bunch of stationary turrets or running machine guns with guys with swords running around in the middle.
In theory I guess with some tweaks it would be quite nice but the thing I have the biggest bugbear is the "standing still", I know where you're coming from but in terms of gameplay it would severely detract from it, i'm still annoyed that I can't walk down stairs in some cases without unknocking my bow.