What I'd like to see are the Pioneer t-shirts they sold back in the 70s. I have a tiny ad for one of them I should scan in for all to see.
It wouldn't bee too hard to make one of your own jackets with the embroidery. Just find a custom shirt shop and they will probably have an embroidery machine as well as silk screening equipment.
On a different note, I was wondering if any companies ever silkscreened their logos onto their speaker grilles. Might mess up the transparency of the fabric though.