The local Police here in suburban Atlanta have publicly stated that criminals are targeting cars with firearms related stickers on them in hopes that the owner left a gun behind. However, in the same article they said criminals seem to be targeting pick-up trucks in the belief that they are likely to have guns inside. So, I suppose there is some truth to the vehicles and sticker thing, but does that also mean we can’t drive trucks.
As for clothing I wonder if it is really less of an issue. Also, do those guys wear the same shirt everyday or maybe just when they go to the range? I seldom wear any type of graphic or lettered clothing, but since I always wear a hat at the range it’s generally firearms related.
On a side note I have a buddy who drives very nice truck and he has two small decals on the back window. The stickers are understated and I wonder if the average street criminal will even know what they mean. On sticker simply reads Leupold and the other is the Wilson Combat logo minus the actual text.
So, who knows, maybe you can express your interest discreetly and get by. As for myself I tend to go sort of with the “Grey Man” style, but I’m sure I give it away at times.