I have SPD-SLs, too, the 105 ones.
I like them but I am seriously thinking of changing them for Ultegra. The latter's axis spins much more easily (hence the pedal ends up in the right position all the time) and clipping in and out of them is more easy (for some reason even at the lowest setting mine are hard to get out of).
In Vancouver they are nearly standard. I haven't seen many riders use Looks here (contrary to the situation I had seen in Montreal).