Return of Reckoning

Not at my gaming pc right now but there is a guy in south Altdorf & IC who can tell you the answer if you ask the right questions. His name is target dummy or something along those lines (armored variant).

Jagged Edge is Corporeal damage, so no.

Weapon skill/armor pen affects only physical damage. It doesn’t benefit jagged edge(corporal damage), but it does affect riposte damage for example.