Matt,
This is a great idea.. I am pretty local as you know to Carradice (just half an hour down the M65), perhaps we can get them to do a run of F frame rear bags in cotton duck, complete with internal stiffener, perhaps a bag in the style of the original ‘speed’ bag may be a good start? The Safari bags are superb, but very heavy- I reckon the speed style bag would be much simpler, I may have an old bag that is in bits somewhere, perhaps to be able to get a pattern??
Hope you are well, work has been manic to say the least this week, my apologies for not getting back to you sooner, its a crazy old time at the moment..
I visited them a few months ago, the heady smell of leather and cotton duck.. it is superb, any self respecting cyclist who admires British made quality should visit them- another example of a long lasting brand with great sustainable values.
Enjoy..
Tom