CX frames

Hi,

I am looking to buy a carbon cx frame and use on the road with road tires and dbl chainset etc..
Saw a cube cx today the guy who owned it said he uses it as a road bike and it performs better than his road m/c.Have been told they reinforce lugs b/b and head tubes,sounds perfect for British roads.
Planet X XLS sounds perfect and frame is only 1700 gr.Any help would be great.

Please help

I didn't find the right solution from the internet.

References:

https://forum.cyclinguk.org/viewtopic.php?t=120224

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Thanks