Salesmanish

Peter spoke lower still though there was no one in sight except an inconspicuous salesmanish-looking passenger doing his constitutional round the deck.

Source: wiktionary

How do you do, sir? (very hearty, "salesmanish" approach)

Source: wiktionary

Not through charm (though his arsenal included a salesmanish version of that) and not through its antithesis, coercion (though browbeating was an old specialty of his), but through a counterbalanced combination of the two that called to mind an expert dog trainer, with the sit and stay commands swapped for shut up and pay.

Source: wiktionary

Minutes later, he realized that it looked too formal, and too salesmanish.

Source: wiktionary