Elites have to do a mount that is in the FIG code of points. The press is an allowed mount, but it is only a B and takes quite a bit of time. Ideally for elites, their beam mount would be a C or D or would be as quick as possible.
You see more English press mounts from the end of the beam than the traditional press because it gets the kids at the right spot of the beam facing in the correct direction (elites can turn on the beam only one time on 2 feet; otherwise they can only turn on one foot so they mostly avoid turning if at all possible). Most of the kids who press mount in elite have had the same mount since they were level 7s or 8s and are used to them and don't want to change.