Originally Posted by
fietsbob
You can always just put a freewheel IGH wheel in the fixie and add brakes.. 3 speed hubs can fit.
Agreed. If you want to be able to spin freely just get a flip-flop wheel or get a IGH wheel as FB mentioned and get some new brakes if you ruined them.
If you want a second bike that is different, and BD is a good way to go as you still have bike n and will be working on n+1.