I recently sold my carbon road bike and was looking for more of a road machine with relaxed geometry, but still could accept some wider rubber. The Ridley X-trail seemed to fit this bill nicely, and I just received mine last night. I thought I'd start a new thread here and share my thoughts so far. As of now, I have only ridden it on my rollers, but hope to get a long ride in this weekend.
I bought the CR1 model, which I understand is an exclusive build for Performance Bike. This model isn't actually listed on Ridley's site, but it is very close to the C30 model. It is spec'd with a compact RS500 crank, 105 front derailleur, Ultegra rear, RS-505 flat mount brakes, RS685 mechanical/hydraulic shifters, F/R thru-axles, DT Swiss Spline 24 wheels, and Challenger Gravel Grinder tires, 38x700. The frame and finish are flawless, and it looks much better in person.
A few things to note so far:
Size - I really struggled with which size to pick, especially b/c I read Ridley's tend to run a little big. I'm just under 5'10'', and I typically ride bikes with an effective TT of 56 cm. I ordered a size Small which has an effective TT of 54.9 and so far it seems to be a good fit. I don't feel cramped or stretched out, but the TT does feels longer to me. It came with a 100 mm stem, and I'm not sure I'd want anything longer than that. Fore/aft has me right in the middle of the saddle rails. The saddle to bar drop looks bigger than what I have on my Grade Alloy, but it feels comfortable and not aggressive (at least on the rollers). I will still need a few long rides to evaluate and tweak the fit.
Weight - I don't really care much about weight anyway, but for a carbon bike, it might be a little on the heavy side. I don't think this will matter at all on the roads, just putting it out there. I'm guessing a wheel change will knock that down quite a bit.
Tire Clearance - Tire clearance is plentiful on the fork, but a little tight at the chain stays. I tried to get a picture to show the clearance, and it looks like maybe 3-4 mm to spare between the tire and the chain stay with the 38s.
As of now I'm pretty happy with the build and wait to get this thing outside!
Front Fork Clearance:
Chain Stay Clearance:

Flat-mount disc:
