I have a sport tourer conversion (see signature) that suits most of my needs just fine. Having a fork that acts as essentially a suspension piece is an advantage most conversions have over track bikes, especially if you're doing more than a few miles per day on your bike. (I read this somewhere on BF, and it seems right to me, but can somebody with a little more know-how confirm for me?) Still, I wouldn't mind supplementing this ride with something will more aggressive, trackish geo (like an IRO) for when the mood strikes.