I had this conversation with Robert, can't remember his exact words...but, don't get leather, not good in the rain, vinyl is hard wearing, easy to clean...and when your butt's on it you won't know the difference. I believe cheaper as well.
Just to flag up an alternative, have a look at http://laamseats.com/ they were recommended to me by a fellow IBA member who has one on his FJR1300, my K1100LT-SE is now fettled/farkled with one, that I could not have attempted any certified run without: Seth Laamb is very knowledgeable and professional.
Thanks for all the advice, and the link to Laamseats.com. But I have decided to go for a Russell.
I guess it looks like Vinyl then
Things are on the move bought a secondhand BMW R1200 RT seat off eBay today. It’s a BMW high seat but that should not be a problem as I ride with the standard seat on the high position + an air hawk and sheepskin. I can set the new high seat in the low position and there will only be about 5mm height difference in height. Now I can check out what height seat suits me best and use that seat as the donor seat for the Russell day long,