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@retrodicorsa
OK OK, this thread is getting bogged down in a cloud of semantics about what things are called.
Here's what I should have done in the 1st place if I wasn't lazy/didn't think it would end in fisticuffs at dawn:
One piece CARTRIDGE BB (e.g. by Sugino, Shimano UN, Campy Centaur/Chorus)
NO need to face.
Miche CARTRIDGE BB, loose (internal) cups but also one piece and therefore:
NO need to face
Shimano Hollowtech II type OUTBOARD BB (available across whole Tiagra-Dura ranges, this happens to be 105):
Shell MUST BE FACED for optimum performance and bearing life.
Campag OUTBOARD CUPS - the actual bearings are pressed onto the cranks and are indeed sealed cartridge type, but TWO piece i.e. separate.
CAN be installed without facing using Loctite 222 (RTFM if you don't believe me) but FACING highly recommended for performance and longevity.
Sugino 75 NJS type, also what I would call a traditional BB (separate spindle, cups and bearings).
Again, facing not essential but highly recommended for performance and longevity esp. with the more expensive/precision ones (like the 75).
In all cases thread CHASING is always a good thing prior to BB installation if you have access to the tooling, and pretty much essential for outboard bearings.
Shall we call a truce now? ;-)