Cool bike, man. Though, I'm not a fan of the fenders. But, they'd look better with a better fender line.
Fender's technique is good. His bars look good and hold up for a long time.
I like cloth tape, but I don't expect it to offer any real padding so I'm not disappointed. I would advise against brown cloth, Aaron. I doubt it'll turn out how you are expecting. People have strong opinions (usually against) on white cloth, but that's what I'd use on that Cinelli. It would look entirely appropriate.
I use hockey tape (from my LBS - he accidentally ordered a case of it) to secure cables, but I've never covered the entire bar with it. It's thin, though, so it would offer no padding and would be a pain to remove later on. I tape from the ends and finish with some sort of thread, securing the thread with shellac or plenty of clear nail polish.
This is what white looks like with one coat of clear shellac. It has since received some miles and a second coat; I'll try and post an updated pic. Looks like I don't have a close up of the sleeve area.
Black waxed thread to finish Fizik.
This is some kind of fine thread that goes on about 5 strands at a time. My wife picked it up at JoAnn's Fabrics. It works really well with shellac or nail polish on it.