People will look at this ad and think "that's a lot for a gigbag".
What they won't appreciate is the quality of these.
I remember the first time I saw one and was blown away by how well made they are.
I wish I had the cash.
GLWTS
American Pig - John McLean
Sweets for my sweat - The Searchers
Biker Street - Gerry Rafferty
Shite room - Cream
Norwegian food - The Beatles
Bicycle rape - Queen
Not sure if it would work for what you want but there is a spray on leather protector product available in places selling hiking gear like Mountain Warehouse
Just spotted this thread.
I have one, serviced by Ashdown FOC when I first got it. That's not uncommon for the first class service that Ashdown provide.
TBH I've never used it and would be happy to find someone who would put it to good use.