The Ob is the way to go for sure. The other night looked pretty 'cwappy' early on but my better half went to bed about 8:30 ( way too early for me ) and I looked out, it had cleared. Run the pwr lead across and had a couple of hours out there. Another advantage is the scope is already cooled and stable and no alignment time lost. I'm up and going within 10 minutes. Takes me longer to get some warm gear on first.
And the fire and red wine is just 20 meters away as well ...
should it be required of course.