Actually, I have managed to completely repair a flat on the road. I was a loooooong way from home, and riding solo when the flat happened. My wife was at work, so the only real way to get home was to fix the flat, which took me around 20 min. So it really is possible, though it is definitely NOT recommended.

Bear in mind that this was not the first time I'd fixed a flat, though the rest were done at home.

Field patching --- possible, if you don't have a choice.

About those Servizio Corse tires, are they really that bad? I bought 3 of them last week and am hoping they can be used for commuting.