I think he has positional fluidity a little as well. Not like either guy would have to be a pg. I consider the roster with draft decisions... like I'd push Donovan Clingan down a few spots... but in general take the best prospect and figure it out.
Key’s versatility is part of my consideration. I like that he’s (surprisingly) playing as an on ball distributor but I also don’t want to put him in a box so early. For example, I think there’s potential for him to be a big time movement shooter off the ball.
Defense is a concern, but still think you don’t let Key get in the way of drafting anyone.