Ah yes, thanks. Been close to 7 years since I was an active CFI-I. BUT...when I used to teach a lot of partial panel, we'd do a demo of the turn coordinator failing during a partial panel scenario...never went well. Point being, most guys would mess themselves up and pull their wings off before a mag compass will get them out of the clouds successfully. Only a very few with RECENT practice in IFR partial panel training would have a chance. There's a reason why I and most other CFIG teach the benign spiral. Simple and effective.

E