I have not seen any. However, as French-sized tubes were simply the closest metric equivilent to imperial tubing sizes, I would think that they might be close enough to do some good. It may work that one of the tubes does not work as the top/seat tubes were different sizes than the down tubes, and the equivilent may be off too much one way or the other.

I may have to take a hammer to some old Peugeot/Gitane/Motobecane frames around here to see how they do. I have a 1972 TdF frame I cannot get rid of. Might as well use it for scientific purposes.