I also moved to shaft drive motorcycle after a cross country trip on a chain drive and tired of lubing it and the mess it made. Run a Moto Guzzi and it has been wonderful for the last 15 years. Change the oil once a year and keep on motoring. On the bicycle I don't like IGH, so chain it is. Not too messy, really, and wheel removal/installation is much easier with less hassle. I do see shafties for bikes if the cost comes way, way down, but the IGH will prevent that from happening even if they figure out how to do a low cost shaft drive.