Mike:
I agree with you, that sometimes 'shortcuts' are taken by some people, be they 'hacks', or pro's that may look for an 'easy way out'.
Renovation work is tough, no doubt about it, and rewire without damage to finish is an art. There are sparkies that specialize in renov work, and they do remarkable things. There are new construction sparkies that are 'lost' once the 'rock goes on.
As Greg posted, yes, the GF breaker will satisfy code, and provide a measure of safety.....it's up to the end user to perform the mfg required (suggested) testing in a timely fashion.
