Getting pretty good at riding clipless. The biggest thing is not getting complacent and forget to clip out a foot when the stop sign is three feet away
Next biggest thing is riding on some single track with them. Will have to go out to my favorite river trail and wear a lot of padding and take the BIG first aid kit! What a vote of confidence huh?
I can't really tell the difference in the efficiency thing between clipless and pedals, but right now, as long as both wheels are turning and I'm upright, that's all that matters!