After a couple of abortive attempts at going in via St. Andrews Sq., I've settled on a route to the new office which seems to combine practicality with AWESOME POWER.
http://connect.garmin.com/activity/89558677
On the way home I'm still taking the tunnel under Canonmills, riding up to the former cycle crossing at Queen St / St. Andrews Sq, riding over it anyway and then turning left at Princes St. to go up the Bridges. Any other suggestions from town-centrists?
Riding in on the MTB is awkward. I feel like a giant sail with legs!