Thanks to forum member Julian this awesome Knights T-shirt is now available!
It has the “Winner” screen on the front and a screenshot and Amiga Knights logo on the back.
You can buy the T-shirt here:
http://www.cafepress.com/cp/customize/product2.aspx?number=1260489969
See also the forum thread:
I will chose the lighter grey color shirt, allowing the default purple color Winner text to shine with more contrast, conveying every Knights fan a winner, brilliantly. Thank you Julian.