Hotpointfan,
The spin drain on Indesits works as follows: The drain pump is attached and driven by the motor but only reaches the speed to pump out when the machine kicks into spin, see posted youtube link.As you can see the water level just comes to the door boot in these machines and you will notice no faffing about distributing the load, goes from tumble to spin in one jump. As for water usage I am not sure but they did do five rinses to make up for the poor interim spin speed. If you owned one of these machines in the UK you almost certainly needed a separate spinner as you could wring water out of most things after the final spin. Hope that helps.
Brandon, the L5 is the model shown in this clip, but there are video's of the later 091 and 092 on youtube.