The designs are too "over the top" for my taste.
While I would like to wear a shirt with an Ilford or Kodak logo, I don't really care for the "in your face" style of the sayings under the logo. I'd rather just wear a logo on my shirt, maybe with a company tagline then leave it at that.
If you are using a traditional camera and wearing a shirt with a film company logo on it, the casual observer should be able to make the connection. If they don't, I don't see where an over the top saying will do anything. It would either make the wearer look like a poseur or insult the intelligence of the observer.
I prefer a more subtle approach. A solid colored Polo shirt with a "Kodak" or "Ilford" logo above the pocket would look good. Maybe a T-shirt with a logo on the back.
Let the thing speak for itself.
P.S. - The way I understand, anybody can make any design on a T-shirt, etc., that they want provided they don't sell it, present it in such a way that would lead a casual observer to believe that you represent the company, or display that image in such a way that would damage the company's image. For example, I could draw Mickey Mouse on a T-shirt and wear it as long as it was done with my own hand but it would probably be over the line if my picture of Mickey Mouse had its middle finger extended and said, "F-you!" Wearing such a T-shirt MIGHT be okay (as an expression of free speech) but wearing it to Disney World and walking down the midway would be right out.