My brother in law is in total agreement with you on the pedals. I, however am also a road cyclist, and have an efficient "circular" pedal stroke. Every time I ride without the clipless, I gork my shin. Hence, your suggestion to get shin guards. My problem is, that I have hooked up with a mt bike group, and they all run these beautiful mtb trails we have out here, and 99% of them use clipless. For true cross country riding, I believe the clipless is better. If you're an idiot like me, maybe they are scary, but I am crashing much less. In fact, we just did a 32 mile point to point trail, and I didn't crash once!
Clipless facts, I can climb like a madman with my clipless, not so much without them. My brother in law is a better overall bicycle rider than I am, but I smoke him up hill, in fact, I smoke even most of the experienced MTB riders up hill, I think it is the road cycling, but I'm not sure. I did get some great Crank Brothers Acid 1 "downhill" pedals. They have a platform, so I can clip out and stand on them if I freak out (which is more often than I like). I put the Egg Beaters (which I bought when I got the bike) on my commuter bike, I never freak out on my ride to work. The Egg Beater style pedal is really easy to get out of, but I do have scars on my leg from crashing in a lava field on one of my first rides.