This beast is by far our most sold t-shirt and it's been with us on basically every show we've ever done.
Anyways... it was actually our dear merch supplier who suggested that we'd make a JD style shirt. I wasn't so sure about the idea but I eventually brought it up with Martin and we finalized the concept together while sharing a hotel room during some tour in Sweden :D.
The first runs were printed on grey shirts but we later on changed to black and added a back print, based on a flyer someone did for one of our Australian shows, I have shamefully forgotten the name of this person but she was kind enough to let us use her design which I'm eternally grateful for.
I wear this shirt (mostly the boyz version of it :P) all the time myself and you won't regret it if you pick one up! :D