Stakes in the frozen ground is not an issue. Either use a portable drill with an auger bit or a slide hammer hole punch.
Yes FBs are better-but what happens if you do not have the room to transport or store them?
As for Buck Wings.
The good would be the movement and they are to collapse making them compact.
The bad would be how well does the body fill out after they were collapsed? I had boo cou problems with Carrylite FBs there had a too flimsy body years ago in that the body always had deformations .

So how weel does the swivel post hold up to the abuse of hunting???
FYI-no I have not used Buckwings.