Tangled Arms/Hands on the Steering wheel
 

I was watching some videos of Auto X ? (Cones in a carpark) The driver had his arms and hands really crossed over at times. Is this a good or bad thing?

It's fine as long as the course isn't too tight and you have to go beyond a 180 degree turn of the wheel. They are technically doing proper hand technique.

Personally, I'm a 'shuffler', so it doesn't matter to me.

Here is an example of my 'improper' technique.
https://www.youtube.com/watch?v=SvXDcA-2yac

Then proper technique (not moving hands).

He only gets a little crossed up at the end in a very tight corner.

https://www.youtube.com/watch?v=DaVH6vexbfo