With the rolling resistance changes the fastest way to race routes including the jungle is a bike swap to the MTB as you enter and then back to a road bike as you leave the jungle loop. This is a ridiculous situation that penalises those that do not have the MTB and is just odd when it occurs in a race. While the choice of equipment has been proved to have a time effect none of the road bikes provide such an enormous time benefit over the other choices (or more benefit than a well used power up).
I’d like to propose that what ever bike you leave the pen on during a race is the only bike that you can ride till you cross the finish line (swapping in the pen before the start should remain allowed).