I bought my Roubaix last November, and haven't touched my Crosstrail since. However, last night my wife and I dusted off the the hybrids and did 12 miles on the crushed lime trails close to our house. I discovered 3 things by the end of the ride:
1. I miss a good ol' off-pavement hybrid ride. A very relaxing ride, no worries about cars and traffic issues.
2. Seven months on the Roubaix has made me a much stronger rider than the previous 18 months on the Crosstrail. I was easily powering up inclines w/out dropping a gear, the same inclines that would have required a downshift or two a year ago.
3. I definitely want to put some clipless pedals on my Crosstrail. And maybe, down the road, some narrower tires, but definitely some clipless pedals ASAP.
(cross-posted in the Road Cycling sub-forum)