I have attached a couple of photos that show it is a lie that the Multiplex pizza boxes need a tray or large hands.

The photos show the pizza box with the short (what I consider the normal thumb on top) sticks, next to a Futaba 6EXA.

The first photo shows the distance from the stick to the side of the Multiplex is exactly the same as for the Futaba.

The next photo shows the depth of the tx from stick top to rear case, that your hand from thumb to fingers has to grasp and shows it is less for the Multiplex than for the Futaba. So if any Tx needs bigger hands, it's the Futaba! Since no-one says the Futaba is a tray Tx or needs big hands, they are fibbing outright when they say the Multiplex needs it.