I commute 1 hr each way on my CX bike with 28mm slicks and mudguards. It's not one of those twitchy CX frames, it rides like a normal bike. It's 3 Kg heavier than my road bike, that, combined with a backpack means I end up a couple of KM AVS slower than I'd expect. The CX has SPD's and the roadie has road clipless.
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