I used clipless for a couple of years in Hobart. I rode my bike to a park with nice soft but short grass, changed the pedals over, put the shoes on, and started riding around, stopping, unclipping, clipping, going, stopping etc.
I took one tumble the first time I stopped, which felt very stupid.
In the next 2.5 years and 3500 km, I crashed a few times, but never from not unclipping.
Whenever I was going to stop I started to look for something to lean on so I didnt have to unclip at lights etc.
Now I ride normal pedals, but may go back to clipless again soonish.
z