I've been using the Nokian Hekkapalita 106 tyre for (I think) 4 winters. They're still in great shape. Schwalbe and Nokian tyres both use carbide studs, so you won't wear out the studs.
The Nokian uses a different theory. This tyre (the 106) has 2 rows of studs, 106 per tyre, down the center. They are made for ploughed roads and blackice. They are excellent on hard packed snow and glazed ice. But I try to keep the bike as upright as possible by taking it easy and not leaning into turns. I don't use them all winter, but, in the past, had them mounted on a spare set of wheels, so I could install them quickly if it was icy in the morning. This winter, I have a spare "foul weather" bike, so I just left them on. As it turned out, I ended up riding that bike with the studded tyres most of the winter. We had a lot of ice and snow this year.
What that tyre is not particularly good at, is deep, rutted snow. Or, snow that is full of footprints and tyre tracks that have refrozen overnight. They make a 206 stud tyre that also has 2 rows of studs toward the sides. These are made for this kind of snow, and for climbing out of tyre tracks. I rarely need a tyre that is that aggressive. The 106 works find for me. I run them fully inflated all the time.
I may try the Schwalbes the next time, but it looks like I'll get quite a few more winters out of my Nokians.