I don't have that exact seat but I did put a Drag Specialties seat on my Gunner. The quality seems to be very good and the seating position doesn't seem much different from stock. The padding is not quite as soft as stock. I bought mine just for the look.
I bought the Mustang Vintage Solo seat, installed it for one ride of less than 20 miles, then took it back off and put back in the original box. i am 5'7, with a 30" inseam, the the seat is too wide and high for my comfort. I am continuing to use the stock seat.
I am looking to sell the Mustang seat, which I paid $348 for, but will take less. If interested, make an offer.