If you grip it like in the photo and actually crank on a backhand throw I anticipate you'll hurt yourself somewhere in the elbow.
You can actually throw like that. I tried that grip for a while.
You have to throw at your belt buckle for it to work though. If you get it nose down, it goes pretty far, but its really hard to get it nose down.
Part of nose angle is not just only grip, but how your arm deflects based on the height to your body.
There are a lot of players who if they threw lets say belly button height would just naturally throw nose down, but they throw up above their nipples. and what not.
It's all about setting your body up for success, which is the part that's not sinking in for a few people in this thread. It's not about a gimmick to magically realign your wrist at the last second. If you just set everything up correctly in the first place and stop trying to force things, you'll throw better.
Form changes get even harder as you get older though, and I'm changing some stuff right now to help get my swing lower again. When I was on a confused journey like neil here with the nose stuff thinking I knew it all. I had changed where I threw the disc at and made it higher.
I stood around all the time going "I must throw nose down, I'm throwing 400 feet."
Nope.
Form was good enough to smash nose up throws 400 feet. Generally a nose up throw dies at 300-330.
Was throwing nose up the whole time.
My injuries make it really hard to throw nose down. Body doesn't cooperate quite as easily.