I'm thinking about purchasing my first quality fixed gear bicycle after messing around with my troublesome conversion for some time. I'm thinking of getting an Iro Mark V and uncertain what hub type would be best.
First off, is there any advantage to a hub that only can have one cog/freewheel, aside from weight?
Secondly, what should I consider when choosing between fixed/fixed and fixed/free?
I'm planning on always riding fixed. I know there is that "if you are tired you can switch it to the freewheel" thing. This bike is going to be my primary means of transportation and commuter, so that could be useful. I'm going to only have a front brake though, as I intend to ride fixed as long as I am physically able to. Is this "safe enough?"
Having fixed/fixed might be nice if I ever want to go into a higher gear (If I get an Iro it'll be 46x17 stock). I'm going to be in a city though, so I don't know if I'd ever really care to flip to a smaller cog. Another good thing I can think of is if I ever strip my threads on one side I can still ride fixed on the other, and not need a brand new hub. How likely is stripping threads on wheels of Iro quality?.