Bell be beggared! The best thing I got from the army was a parade ground voice!
Seriously, when I cycled to work on the Pacific Hwy and Pennant Hills Rd. I didn't have too much trouble. I figured it was easier for me to watch out for generally predictable vehicles than to ride on the footpath and watch out for unpredictable pedestrians. And yes, I occupied the left hand lane. There's not enough room for a car to squeeze past me safely if I ride in the gutter, and if you have to go part way into the other lane, you may as well go all the way. And don't come that crap about how cars should have right of way. You're one person driving, I'm one person riding. As I see it, we each have the same rights, and cars, being inanimate objects, don't have any. Besides, if there weren't so many cars on the road, I could ride much faster.
The real problem was early on Sunday mornings in Lane Cove National Park, when I rode a tandem. Now this is a great time and place for both pedestrians and cyclists, as there are no cars on the road before the gates open. The roads are wide enough for both, provided the pedestrians keep to the side, and cyclists keep to the left. It would be better if the pedestrians kept to the right, so bikes don't sneak up on them, but as long as they're on the side, it doesn't matter - just ring the bell or call out 'passing'.
But their were always the idiots who walked in a group, spread out across the road. I gave up warning them, because they were too unpredictable. They would go left, right or stand and stare like a rabbit in the headlights. Much safer for all concerned to go past them without warning.