Southern Ontario Salted Slush, accumulated snow-storm and occasional icing winters here.

I own a set of SMW (26x2.0 IIRC) - first set of studded tires for me. Got mine from bike-components.de for 65.90Euro a pair + shipping. Performance on Ice is good, just like a studded tire is supposed to work. Performance on compacted snow or lower amounts of loose snow is decent.
What really limits the use of SMW's for me is that I get significantly less traction out of them (*) once there has been more than ~5cm of fresh snow, possibly paired with car tracks. They just fill up very quickly with snow and don't allow you to float very well for the width they have (it's more a round tire). For 90% of the time in the conditions here, my Kenda's work better - for you it might be a lower number as you seem to be more on the ice/compacted snow side of winters.

(*) compared to my standard cheap Kenda MTB tires of similar size with a tread similar to this one.

I would say that SMW's work, if you are not so concerned about deep snow cycling (with or without car traffic). If I were to replace my studded tires, I would likely try/research something else if the prices are comparable. It's just that I can imagine more all-round studded tires than the SMW's.

Edit: On the eternal discussion on wide vs. narrow winter tires: I am on the wide side of the spectrum (float on top, rather than push down to the pavement with narrow tires). Maybe SMW's are much better when using the narrow tire philosophy?