I actually rode one last week at the Florida GWRRA rally and I was extremely impressed. The ride was so smooth, it was like riding a high end luxury car. It does steer like a big 4 wheeler ATV, but I found that as long as I was moving, it steered pretty easily. It's a bit pricey though, around $18500 for the complete package and only a scant few places to get the conversion installed. For that price you get a total front end replacement, additional radiator, new rear tire and heavier suspension spring. They said that if you had ABS or Airbag, all would function as before once it was complete.
I want one, but I am having great difficulty wrapping my head around the high cost, almost what I paid for my Wing when it was brand new.