Normally I wouldn't pay much mind to these things however I understand how an artists work is usually theirs. There is a group that released t-shirts for profit not long after the live album artwork was released and they are printing it on their shirts. This comes to mind because this is NOT the first time this group has been caught stealing the work of others. I figured if the artwork is protected people should know. Maybe I'm off my rocker BUT these shirts look like the Caught in the act cover. See for yourself.
Copyright infringement is very difficult to prove - the infringement must match the copyrighted product EXACTLY.
I do want to say that I am a HUGE fan or Eric. However, I am also a US Marine. The skull (with or without the crossed rifles) has long been a graphic/symbol used on Marine Corps stuff. Hell, I have a tattoo on my arm from 2005 that looks almost identical to the skull on one of the shirts that was sold on eric's website. It also looks identical to the drum set they were using on tour a year or two ago. Huge fan or Eric, but come on, let the Marines have their damn hoodies lol.