Designers long ago transformed clothing into self-promotional vehicles via labels and logos. Now, Eye Level Marketing (a division of the Billboard Clothing Co., probably not related to Armani) has begun placing big ad panels on employee uniforms. And aren’t they attractive? Eye Level says workers at sports arenas, state fairs, theme parks, supermarkets and drugstores are perfect for their signage. But why stop there? It’s not such a leap to imagine Pfizer and J&J buying space on physicians’ scrubs, or Taser and Smith & Wesson advertising on police uniforms. There’s a joke there about a captive audience, but it’s not funny.