Originally Posted by 531Aussie
yeah, good point
When clipless first came out the 'safety' message was WAAAAAAY overstated. It was like, because the clips were similar to ski bindings, we would automatic 'fall' out our pedals at the slightest hint of trouble, therefore reducing a whole host of injuries. Well, guys are still mashing collar bones. Clipless are obviously safer, but the 'sell' was over the top at the time.
I had a couple of medium impact crashes in the old days while using toe-clips, and my feet were wrenched out of the pedals
Broken collar bones usually happen when you try to brace yourself with your arms out. Staying completely attached to the bike (feet AND hands) will prevent this. If you ever watch Japanese Keirin races you'll notice during crashes that they [usually] don't let go of the handlebars.
Also, the Keirin racers are using toe clips and straps with slotted cleats.
Back on topic, you could always do what some track sprinters do - put toe straps on clipless pedals.