I do not have the F 10 but I had domke's of all sorts for more than 30 years and they are all going strong, even the original pre velcro brown one with metal snaps and catches. I think they are great.
I know Jim Domke, and the bags were made in the USA. Originally Jim made them his self near Philadelphia, and then a nearby contractor. They are now distributed by Ira Tiffen and I sincerely doubt that either he or Jim would offshore them. Chances are 90% or better they are still made in the US.
I ordered a couple within the last two years, and they both had a "Made in USA" badge attached to them. Both are quite excellent, BTW, and only look better with wear. Must say I don't know the F10, though.
Tiffen's website says they are still made in the U.S.: "A: Yes, Domke camera bags are still made in the USA, but they may include some components of foreign origin."
They also warn against fakes made in China, with "Made in USA" labels (the easiest bit to fake).
That's the trouble today: almost everything is copied in China (even Rolls Royce cars), and then sluiced into retail channels all over the world.
Occasionally take a good look at the points where the strap loops are sewed to the body. In my experience these are the major weak points where problems occur. Outside of that and some unfortunately poorly placed Velcro, the bags are quite good indeed.