Then, I suppose the idea is that the charms have variable performance based on who is using them, then?
I have heard of some mention that makes it sound like rubberbanding happens to keep martial arts charms in line with their user.
I'll put it this way—Snake Style has a defense that is way
stronger than anything that a Dragon-Blood is ever going to get in their native Charmset. When used by a Dragon-Blood, it's going to tick down a bit in power so as to not completely overwhelm all other options.
I kinda wish Nightingale was a "My instrument can kill" instead of "My voice can kill" style. Well, I guess I could play a DB with Three-String Sword Prana but it's just doesn't feel awesome enough.
There's a sidebar you'll be interested in, then.
All I care about for Nightingale is that it not be a absolute utter pain in the ass to be in combat alongside a practitioner of the style who isn't EXCEEDINGLY damn careful with how they deploy their Charms. That was one of the top-ranking most aggravating goddamn situations I managed to find myself in during my run with 2e.
Yeah, that was a problem I took care to avoid. Having a Silver-Voiced Nightingale master on your side will now be a pleasant, morale-boosting experience rather than oops I dropped an AoE UMI on you.