^ only thing is, you're a walking billboard advertising what you know. Of course, you're right though, that a PT can be knowledgeable without looking the part but people (potential clients) would have to wonder if you have any kind of work ethic. "Do as I say, not as I do" kind of thing.

Of course, there's the other position, where you may have a PT who looks the part due to his/her "supplementation" but barely knows enough to get by. Then people think he/she MUST know what they're doing because of how they look. That the physique they've got is achievable based on what the PT knows.

Essentially, a client's gotta do their homework, LOL. And a PT who's got it all will hopefully get a solid rep due to word of mouth!