I thought immediately of Benson after reading CJ's post as well. But I also don't think Metheny has the same kind of dilemma as Benson. At least not in the way Benson did in the 70's 80's. The difference between a smash hit Pop Chart No 1 and a Quartet blowing session being a fairly significant dichotomy. Benson got around this by regular guest spots on pure Jazz albums ie., Freddie Hubbard, Dexter Gordon, Jimmy Smith and numerous others.
What is interesting with regard to this kind of question re-Metheny is...
basically Metheny has three modes of playing or dialect as CJ put it earlier, The Latin Smooth Jazz type PMG band stuff, his 'blowing dates' on his own compositions or those from the Jazz repertoire, or his 'noise-sonic' improvs. I doubt Metheny really suffers too much 'fan' disillusionment' as by now, word of mouth - and/or auditioning - will alert the fan base to what he's up to on a specific project, ie., 'oh...it's one of 'these' type of records...or...'oh he's doing one of these ones again'.
In fact, compared to the very soft and smooth sound of the PMG group type stuff, wouldn't the intense 'blowing' albums be just as problematic and of disinterest to his 'mainstream' audience as a Zorn inspired project such as this one?
And was there ever a time he was really able to integrate all three of his approaches into a unified artistic vision or album. That's something that tends to be a question mark over these eclectic guys like Metheny, Corea etc? 80-81 maybe?