If you look at my first post you will see that I noticed the bad taste right away. It tastes like the black foam packaging right out of the box. I've had other vapes packaged in that stuff before, as well as some hard shell vape cases. It just plain stinks, for a while.However the taste was so awful I didn't go further, have not been able to test further, still letting it air out and running burnoffs, maybe this is from the packaging material smell??
The Roffu will lose that foam packaging taste after some use, but I think XLux/XVape should reconsider the packaging of the Roffu.