Another problem with Voyager, Pendolino and Meridien doors is that they have no sensors to tell if someone is blocking the door, so will close regardless. They close quite hard too before realising and opening again. It's quite a problem for people when queing either to get on or off the train. I've seen before where the door has closed between someone's back and rucksack. One good thing is that they do have floor switches too, which are designed for use of the trolley person, but can be used by anyone.
Also, whilst Mk3 doors are far from quiet, the Voyager and Meridien doors are horribly noisy and sound like they are about to fail all the time. Gets quite annoying when sitting near the door and it's opening and closing all the time as people get on. I have known them to open and close randomly too. To be honest, with doors either side of the gangways and sealed external doors I don't know why they need doors between the passenger compartment and the vestibule anyway. It's perfectly acceptable for long distance intercity trains to lack them when they have 1/3 2/3 doors (168s, 170s, 185s, 350s, 450s), with the exception of seperating a first class section.