I met a guy recently with massive (can't remember but big about 20mm) acrylic tapers, and I asked him the same thing. He said he was fine. Of all the things to worry about (infection, swelling, not looking cool) using acrylic seemed like the least of his worries. I DON'T use acrylic, but if you do, it's not the end of the world. Just maybe save up and buy a steel set in the meantime (like me
) x