Maybe this is common knowledge, but it was new to me. I just picked up some French thread VAR BB taps so I can work on French stuff without so much cussing. I already have a full Campy tool kit in English thread, and thought my next step would be to pick up a French thread Campy BB facer pilot sleeve (#724/1 and #742/2) so I could use my Campy facer on a French BB, but to my surprise the Campy facer tool fits perfectly through the VAR tap:
This means I can use the taps themselves to pilot the facer (as is done with the Park BB tap/facer set) instead of spending $100 on the Campy pilot sleeve.