I went to the L(used)BS and they had a bunch of french cup sets all with varying degrees on pitting, but I selected the best set with the thickest walls and think it would work fine with a shimano BB. I sold the cups with a bike though, I just picked them up as incentive to entice buyers so they wouldn't have to source it themselves since the suginos are hard to find now that harris cyclery has no more. But if you want to use ISO cranks would not an italian BB like a campy record (i.e. thin cups spindle) work as the flanges are further apart? You could try it.. I am not at home or I would go see how similar the flange distance is of a campy BB to a stronglight cottered spindle.
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear