I wouldn't have a problem with a cool-looking tee, as long as the brand wasn't the main element, or at least artfully integrated into the design.
Cloth bags, on the other hand, I'm all for it. If it has a nice design, even better.
I like this option from the t-shirt design contest:
It would look good on a cloth bag>
But, hey, since we are throwing ideas around, I would be up to be an Anker ambassador at the next ComicCon dressed as a custom-made Anker hero, if they provided me with the costume and some goods to show off.