I don't know of anyone who has used this specific seat but, mustang makes a seat called the day tripper. I do know from past experience they make a great seat.
here's some info from their site.
DayTripper™
Mustang's advanced comfort technology has been incorporated into this totally new style of custom seat. Ride low, look cool and still be comfortable at the end of the day's ride. The detailed stitch work in the highly durable, synthetic glove-leather cover makes the Day Tripper™ a real show winner. Never before has such a low and lean seat been available that feels this good for both the rider and the passenger.
you can buy from discount internet sales for 20% off, just ask around here.