You can't be 100% of the time in werewolf form but, if I'm not mistaken, most of the missions can be done skipping stealth altogether and just ♥♥♥♥ everybody up in werewolf form.
I think some missions would be very hard without any stealth at all, but the game let's you try either way. That said, you can only turn into a werewolf when you're in a room you can fight so between rooms you'll have to be human or wolf.

One of the funny things about this game is that you can actually interrupt NPCs while they're yapping in a cutscene and just turn into werewolf and kill 'em.

Thank you That sounds good enough to me.

I guess I'll give this a try !