For my riding uses & local terrain, single speed (vs. fixed or geared road bike) is neither fish nor fowl, and it remains to be seen how much I'll ride this particular setup. That was the point of my experiment, actually. Fixed, to me, is better for short exercise rides because of no coasting and working harder on hills. That's also the same reasons it's not the best choice for rides over 20+ miles.

I know far more roadies who wonder, if you have a nice road bike, why you'd even bother with a FG/SS. It just seems impractical, too hard, dangerous, bad for your knees, etc. There are the fixie loyalists you say "you only need one", and roadies who say "I don't need one".