I'm sorry to go off topic, but I've recently started to put ( trekking / MTB ) SPD pedals on all my bikes ( except the short stint bike ), and using multi release SPD cleats, because my ankles are suffering a bit on big rides, with SPD SL equipped bikes. The multi release cleats are brilliant. You can step out of the ( dominant ) pedal ( with a bit of practice ) with no twist, and you can get the other foot out with a ( more natural ) inside twist. Unclipping only a few times on SPD SLs, is fine. When you're having to do it 60 ( and the rest ) odd times, my ankles don't like it. It looks a bit odd, but all I care about is reducing the hammering my ankles are taking on a long ride.