Ask yourself, why now? I work at a vaccine center and they are all slowing down. For those who aren’t “hesitant” but maybe haven’t received their shot for lack of urgency (convenience issues/complacency), going to a store full of people not wearing their mask may make them feel less secure and will provide urgency to get their shots. Interesting strategy but as the unvaccinated anti-maskers stop wearing their masks in public (no one is going to check their vax card), you are going to see outbreaks and death. Let’s see if it works to get more people vaccinated.