Mine built to 22lbs 5oz with Hope Pro2 Evo onto Stans Iron Cross, and the stock steel fork.
I am running Maxxis Raze tyres tubeless at 37psi and they seem OK on the road as the central knobs make a good running surface.
As long as you don’t try and sit out all the bumpy stuff they are excellent – mine was built for dashes around the common of about 50 minutes instead of going for a run, and is a lot more fun and better cardio for me as I can push hard cycling but not running.
My mate who bought one has the front end higher and the hoods tilted back, which doesn’t encourage getting out of the saddle so easily, so is tougher to climb with and he complains because he sits it out when offroad and it gets bumpy.
It is the stock wheels/tyres that are so heavy.