Have tried one.
Definitely better for straight out.
However, when going onto bends / corners, I am missing the contact with the bike.
In a fast corner, I was all over the place, because I couldn't feel so good anymore what the bike was doing.
You behind gives feedback too about the bikes behavior, and that's gone with this type of cushion.
So, no air pillow for me.
Even when it would soften my butt in the ditch too.
Greez,
Moh
Sounds as if you had too much air in it! I've not had any 'loss of feel' riding with one - only less 'numb bum'.