Hi,
I have a Carpe Diem. When I was researching it, I came across an English review that said it wasn't all that great for cyclocross racing.
I use it as a road bike. It has compromise geometry. If you want a 'one bike does it all' bike....that's a good choice. If you want something hardcore cyclocross..... you might want to look for a CX specific design.

Oh yeah, the ride is firmer than I had expected. A classic Ti ride is almost cloud like. None of that here, the ride is firm and fast.