I’ve considered this too, I think it could work well depending on the area. A friend of mine did some pheasant hunts where they had planted tall sorghum/Sudan type cover and he said it was loaded with beds and the deer were just scooting around them in it.
I may try some In addition to some switchgrass I’m working on next spring.
My only recommendation is to plant it a bit later than recommended. The seed heads get heavy and high winds in November will make it break in half. That may not hurt for bedding. It kind of hurts when it's a road screen.