The Best and Worst Virtues

Phft! That's almost trivial.
Even the flambeau example in the core book (ArM5, p. 25) can do that.
Did we forget the 'Frightening Munchkinism thread already?
Everything done in this post can probably be done equally well with fire.
That's a stable penetration over 30 (before dice) on Incantation of Lightning IIRC.

Any roll that doesn't represent a seasonal activity IIRC

For a pure combat mage, it ptobably is the best.
For anyone interested in anything besides combat, probably less useful, but still very good.

Where does that put me then?
I tend to think newly Gauntleted magi should be more powerful, but the powergain over time should probably be a little slower.

Seconded.

Agreed.