Consider this my review of Pirate Upholstery.
I don't know if anyone is looking to customize their seat, but I wanted to suggest
Pirate Upholstery. We won a $200 gift certificate at the Pittsburgh Vintage Scooter Club City Rally, and I got to use it for my Triumph. I love the Sargent seats (
like this one), but they're really expensive. For $50 extra (total seat cost $250), I got a new, awesome seat for the Speed Four. I wanted them to lower the seat too, and there's not much room, so they added a gel pad too.

Here are
a couple more pics.
Jay at Pirate Upholstery was great to work with. I bought a stock seat off eBay and shipped him the seat and the seat cowl so he could color-match the pillion portion of the seat. He IDed some colors for me, but there was a grain in the fabric. He sent me his sample book so I could verify that I was OK with the grain. Even with the Thanksgiving holiday, I think it was a two-week turnaround time.
The seat looks awesome, and right after Christmas, I was able to get 65 miles on the bike -- comfort is good too.