My CX bike isn’t really a CX bike at all, it’s a cross-purpose bike (Spesh Tricross disc) so it makes a perfect winter bike with mudguards, a great tourer with a rack and is very comfortable – the position is more like a hybrid or commuter than any kind of racer. I rode it 70 miles to Windermere and although it was slower I arrived feeling much fresher than when I did the same ride on my Roubaix, which is also supposed to be a comfortable bike. It’s heavier so you don’t so much attack hills as plod up them but the triple gives a really excellent range of gears.
The CX is 1 mph slower on average than the roadie on the same routes.
Oh and by the way I’ve taken it out on a mountain bike club night ride and up hills and on the flat it leaves the MTBs for dead. Plugging through deep mud and leaf mould in the woods and on narrow muddy flooded singletrack it was also excellent, the narrow tyres cut down for grip and the stiff rear triangle makes it efficient. Going down rocky stuff though it’s hopeless and I was off and walking at one point.