Cubbuster,
As my father used to say, "never forget that spivs and con-men always wear suites".
Somehow I suspect your father was referring to "suits".
I think we'd all spot spivs or conmen sporting a collection of soft furnishings ....
Sorry. I'll be popping off for my lesson at Miss Prim's School for Picky Pedants now ... just hope she's wearing her collar and tie !
FF