Best winter tire out there IMO! Good choice! I also kept mine on year round due to pure laziness.... In fact I drove across county with them on.
The one thing I would say is due to them having such a soft compound (reason there awesome on snow/ice) they make a very poor choice for any rough terrain, like loose rocks, loose gravel etc... I know this may seem obvious however thats how I ended up replacing mine. I ripped a few chucks off here and there on them causing slow punctures and replacement. If I was to purchase them again, I would take them off for summer and use a stiffer compound tire like an AT/MT tire for summer.
Just some food for thought, you have made a good choice though!