Vote with your bit coins I say and only buy from vendors using safe methods, the more people who start doing that the more vendors will be incentivised to make the change. It is still quite early days, my sticky only went up a few weeks ago so it will take a while for the word to spread amongst vendors and buyers alike. I've suggested buyers start to mention the non use of safe non permeable packaging in their feedback both on the main site and the forums including a post to the sticky as this will help to inform others and hopefully increase the uptake of using MBB's etc.