...because they're too trendy?
If I were considering a new bike for mostly-road-but-sometimes-offroad, I think I'd get one of these. The geometry of the 56cm frame isn't too far off from my '91 Bianchi Eros -- the angles are a little slacker, giving longer chainstays and wheelbase, but that's about it. I'm actually concerned that it would end up too similar.
- Scott