Well, broke my fixed virginity this evening.
I've been planning the bike for 12 months & took about 4 months to assemble the parts. fairly cheap (for me) with a decent 70's frame from ebay and basic parts. 2 extravagances - Phil Wood BB (adjustable cups are very useful for fixing chainline) & Rivendell Ruffy tuffy tyres (the most I've ever paid for a set of rubber).
Was a bit nervous about riding it - the first cycling nerves I've had since I learnt when I was 4 years old. Strangest feeling is slowing down or going slowly - cruising along is no problem. Nearly scared myself senseless coming to a near stop for traffic - almost couldn't remember how to pedal. A fall right now would be a bad idea as I dislocated my shoulder 10 days ago.
Has anyone else found that they can ride a wider range of cadence with a fixed? I put a sensor on (temporary while I suss out the whether I've got the right gearing) and found I can do 30 - 140+ rpm no problem (and still going up) whereas all the freewhel machines I'm limited to about 50 - 130rpm - weird.
Sorry for rambling, but I'm pretty happy with the new machine. Intend to take up commuting with it in due course.