Plantur-Pura races on different bikes, depending on which CX team they ride for. I've seen Cant & Worst (and others) riding Stevens bikes, whereas Alvarado is on the Canyon.
As already said, it depends on the agreements of the teams. Pidcock moved from Trinity to Ineos after the CX season ended. Moving mid season can't be ideal, and Fem will be changing bikes, but also groupsets, and other equipment. Interestingly, while she rides a Ridley, in the MTB races she was on an American Eagle XC bike.
Have I understood this correctly? Van Empel will start wearing Jumbo clothes (or rather, clothes with the Jumbo logo on, as you say; she won't actually be wearing ordinary Jumbo clothes) instantly from January 1st? Or are riders allowed to be employed by completely different organisations between Cross and Road, meaning that she could continue riding Cross as a Pauwels Sauzen rider?
As already said, it depends on the agreements of the teams. Pidcock moved from Trinity to Ineos after the CX season ended. Moving mid season can't be ideal, and Fem will be changing bikes, but also groupsets, and other equipment. Interestingly, while she rides a Ridley, in the MTB races she was on an American Eagle XC bike.