I had a guy stop me last night...

My trouble ascending is that I'm always fiddling with the gears trying to find the best combination of effort and cadence to get up the incline. I'm sure that a more experienced cyclist doesn't have this problem.

With a fixed I don't have to worry about any of this - there is no excuse but to just build some speed up and mash it up the slope, frequently passing furiously peddled geared bikes.

Not very efficient, but I'm sure it's great training because I'm getting much better at hills.

If you really understand cadence and gears and ride a geared bike you will be able to destroy almost anyone on a fixed gear. Maybe I am horribly wrong, but whenever I rode my Ciocc or my Chesini and some fixie tried to race me they could not keep up. Although I have found it somewhat easier to keep a very constant pace on my fixed gears.for obvious reasons......but that was over five years ago so my memory is fading....