I do not have a Net54 shirt as yet. I would certainly chat up anyone wearing one. I would expect that would be expected.
On a different note, I was once wearing a tee shirt for WAAF, a radio station in Massachusetts. The station Prize Patrol van whipped up to me on the street, noted the shirt and gave me 4 tickets to see the "Cockroaches" at a local venue, Sir Morgan's Cove. I thought, "Who the '$)%#?' are the Cockroaches?". I grabbed three friends and headed off to the show. (There were free drink vouchers involved
). We arrived to find it was the Rolling Stones doing a warm-up show for the Tattoo You Tour.