There seem to be a few of them floating around, so I figured they could use a thread.
It seems one of the trickier aspects of these beasts is the tire pressure. I was out for a ride today at 9 psi rear / 5 front and it was handling great on the snow covered road. Then I decided to ride along some snowmobile tracks through a field and the back end was sliding around all over the place. After a bit more road riding I lowered the rear pressure to 6 psi and gave the snowmobile tracks another go, and it was much easier going. But that pressure was a bit low for the bare pavement on the MUP, but it was less than a km back to the snowy streets and a short ride home.
Tweaking pressure on the road is something that will probably be necessary if transitioning between vastly different terrain. One day at school I needed to raise my pressure a few psi and it didn't seem to need an excessive amount of pumping with my Topeak Turbo Morph. I might get a high volume mini-pump if I can find volume per stroke specs somewhere that show a different pump would be an improvement.