I have MOMA derbies that look like those in every way but the lining. I normally take 42, but I ordered 41.5. Fit was a little tight at first but after a few wears they were perfect. The leather or waxed suede or whatever is not the nicest in the world, but it's really durable and at Yoox prices I can't complain.
Would sizing down 1 work? I have pretty narrow feet.