I think I've seen those too.....would the Mavic BB facing tool work for the Stronglight version?? Was the Stronglight version part of their Delta group?
I've considered going to the Mavic and Stronglight BBs I've seen for sale for my French bikes (specially on my Swiss threaded 84 PSV), but like most, I feel reluctant to irreversably modify the BB faces on my bikes, although many had stated that the existing threads should still work after the Mavic BB shell facing change if they are properly cleaned up. Could go with the VO, but I really want to keep the totally French "theme" on my bikes.
Anyone ever use a conventional threaded BB on a Mavic tool faced BB shell yet??

Chombi