Shoes....

[tulip]

That is what we have on our spinning bikes - that might be a safer alternative. The current pedals on my bike have a lot of open spaces, so part of me wonders if the cleats on my SPD shoes might get caught in the holes. I am assuming that pedals are easily switched out?

You need a pedal wrench, and you want them tightened enough but not over-tightened. There's a Left and Right pedal--the little L and R are on the part you screw into the crank arm. You can do it yourself, or you can have your bike shop do it for you. I don't have any problems with the holes in the pedals. They are great pedals, as Papaver has attested to (Belgians are very trustworthy, I think )

[Crankin]

Just be careful with those Campus pedals.. they tend to flip over because one side is weighted with the cleat. So, if you are kicking the pedal over to flip it to the flat side, you might accidently clip in! I don't think it could happen very easily, though. I have these pedals on my hybrid (though I barely ever ride on the flat side) and my mountain bike, where I do frequently rest at least one foot on the flat side.