Thanks guys for all your input on this. I had my 1,000 km service last week and mentioned it to the service guys. They said they had noticed a different steering feel in the CU2 and that it was caused by the EPS/steering assist.

Having driven the car some more since my original post, I don't notice this nearly as much as I did then. I seem to feel it more now when straightening out of a corner than during the cornering. Makes sense that it would feel heavier as you change direction with steering assist momentarily cutting out. In any case, it's not really a big issue for me now.

One hand on the wheel? Nope. I'm actually a pretty placid driver most of the time. Type R +, you've done well if you've belted your car around up there and not been pinged by the Mundaring cops!