To me, it doesn't matter who suggested it or exactly where he bought the suits. I used to work in a firm where suit and tie was the order of the day. I didn't get a clothing allowance. I paid for my own suits, shirts, and ties. (And my own shoes, socks, and underwear.) I don't remember if my accountant at the time said I could write off some of that expense because it was a work requirement, but the bottom line was that I paid for my own clothes. And I wasn't making nearly what Wayne LaPierre was making fifteen years ago.
Now I find myself wondering how often Wayne goes to lunch with Chris Coxe so they can charge the lunch to an NRA business credit card because they "discussed NRA business" over lunch. Back when I was in an architecture firm that did work around the country, several of us frequently went to lunch together. We usually discussed our projects ... but nobody got to charge lunch to the company's credit card because we were discussing business.