certainly would i fthey do it with all uk lgv pcv test centers, the variation rule tends to come into affect that the routes can be done in reverse order, or if say like on of mine on my last day of work goosed up on a roundabout so the examiner on the wat back in to test center made variation to give extra roundabouts to check whether hes fault was a one of with nerves or was a consistant problem.
however i feel this could improve the odds for the learner learning driving rather than worrying about where he is going.