Snuff,
Is your friends Russel Day Long passenger seat made on the stock seat pan? This may be an option for me!..
I've had Corbins and now I have Leatherlyke bags. The Corbins are great, and look really good on the Rocket, but the price now days is rediculous. I traded/sold the Corbins to Sunshine for her Leatherlykes so I could buy my Jardine system..
The Leatherlykes are not as pretty as the Corbins, but they are GREAT for my needs. They are tough, scratch resistant ( I have kids with bicycles ), and come off in seconds.