[Adam]

I'll bet he doesn't back pedal any more.

The problem isn't necessarily that you're more likely to fall (even though I think it's true) or that your less able to see where you're going (even though I think that's true as well). The problem is if you do fall, your ability to catch yourself is severely compromised. What happens if you lose balance just as you're heading across the baseline into lead position? You're going into the wall head first and will be lucky if a week of ICU is all you get.