Well, it looks like I may be adding an IGH to the Xtracycle soon. I've found one online that fits the budget and purpose of hauling cargo and children. I am really excited to have this addition to the bikey stuff I run. After this winter's mess on the Xtra, I think I really need something that will eliminate mechanical issues and upkeep. It'll also allow me to switch over to disk brakes with ease.
There's just a bit too much benefit to pass it up.