I have shimano 521 clipless pedals on my MTB. Just wanted to know if any of you guys knew whether it is possible to get a second set of identical pedals to my road bike so that I can use the same shoes etc?
Try putting your mtb pedals on your road bike: to the front with the spanner=off; to the back=on. Benefits: easy walking, double side entry (a genuine benefit in town), one pair of shoes.
Shimano do a very light, single-sided road pedal to take their mountain bike SPDs, erm, these things. But any Shimano mountain bike SPD pedal should be compatible with your shoes/cleats.