a model professional

[Joe]

He's a model professional.

1)He works as a fashion model.

2)He's a professional(though we're not sure of what exactly he does for a living), and he's outstanding in his working field(like, "he's a model student")

Which way to understand the sentence is correct? I'm so confused. Is it an intrinsically vague expression that we should avoid using? Thanks for explaining.

[Tdol]

It's 2. If you wanted the first meaning, you'd say 'professional model'.