Bought some eggbeater 1's to put on my salsa road bike. I had some older diadora road shoes that have the three hole pattern AND the 2 hole pattern. Way back when, I used them for a while with SPD mountain cleats.
On my eggbeater instructions it says serious injury or death can occur if you use the eggbeaters with road shoes. There isn't really any clarification after that. Is this for people that will try to 'bolt' one cleat hole to one of the three holes on a shoe wiggling around and all - on a shoe without both bolt patterns? Or is there something more ominous, I'm not aware of.