so, I have really bad knees and I've been trying to figure out a pedal configuration that works for me...right now I am using crank bros mallets with DZR ovis shoes...so it's not too bad to go into the office with my bike shoes on...but sometimes it just seems like it would be really nice to have the ability to pull without having to have my bike-specific shoes on (since this saves me from applying downward pressure at the top of a pedal stroke, which causes me a lot of pain). I haven't liked traditional toe clips because they tend to scratch my leather shoes...so...I am wondering what people's experiences with power straps (or similar) or specific clips that are good at not scratching up your shoes, or some other idea?

Cheers,

Josh