Personally I would wear one, without a doubt. Nothing too complex just the basics.
Heres what i got with 5 mins in photoshop:
(Not sure why the image is all messed up like that, heres the direct link: http://img470.imageshack.us/img470/2695 ... irtgj8.png
I guess it would look good with an orange shirt too.
Just a suggestion, but I'm sure a lot of people will wear it and it would get the word out about your great products.