For short-handing, a roller furler is wonderful. As far as things going wrong, everyone has a story about the d*** furling line fowling, or overwrapping, or the drum freezing, leaving them with 1/2 a jib to manhandle on the foredeck. Like everything else on a sailboat, it happens, can be prevented with a little maintenance, and solved in an emergency with a length of line or bungees. UV protection with a sock is cheap ($180 from Ameriseam in Tampa) and not much work to put on at end of day. Setting up when stepping or trailering is a little more work than a straight forestay, but not worth considering. If you race, you lose some flexibility with foresail size, shape, etc. but will remain competitive in lighter air.