I posted this on the ADVRider forum, but posting here too.
Today I rode with my new Air Hawk for the first time. I have the DS model on my 2k5 Suzuki SV1000S, it is the Air Hawk recommended model for my bike. I bought it because I am about to go on a long trip and last year I did a 7,700 km trip and ended up with some serious saddle sores.
Overall I think it's a nice, cheap improvement for me, at least for highway riding. The construction is nice and I removed my seat to fit it so the fit is pretty great. The straps and material on the bottom so far hold it in place pretty well. I haven't had a long ride on it yet but I rode it to work today, which is about a 20 km trip in traffic and it takes about 30 minutes. I inflated it to what I estimate is about 50% and I found the seat to be pretty comfortable, the seating position is obviously higher but that mostly works for me since I am 6'3" on a bike that has a pretty aggressive riding position and I'm no yogi. The riding position is nicer on my hips and knees, but since I am a little higher above the bars it's a little harder on my neck which is a tough point for me. I'll see how it plays out on a longer ride later.
The one major drawback I found so far is that the air tends to shift around inside, so I don't feel as stable on the seat. It feels like, well, sitting on a bag of air, think about sleeping on an air mattress as a comparison. For highway/long days I think this would be fine, and maybe even an advantage, but for aggressive riding I think this would be a problem. Possibly getting used to it, or changing the internal air pressure would solve this. Also it comes on and off petty easy so if I am gonna go out and ride some nice twisties I can just pop it off.
Here are some pics of how it fits/looks on my bike. While taking the pics I noticed it's a bit crooked which I will correct. I'll report back in a few thousand km.