As nice as they are, I'd recommend getting any you have left sold ASAP.
Games Workshop aren't exactly known for being stingy with Cease & Desists against things that even look as if they might infringe their copyrights, especially if you're making money off of them. Getting a DD might only have made this more visible, so be wary.
I know that. But as I noticed quite a lot of people are selling jewelry containing Warhammer symbols. The same goes with the cosplay accesories. So I hope Games Workshop will be reasonable about this. Especially considering the fact that It's a free advertisement for them.
Strictly speaking it's not free advertisement, someone else is making money off their copyrights. They have not been known to be reasonable - or even rational - in their past C&D decisions, regardless of the circumstances.