NHL'er who are aging out of the league, and AHL'ers whose NHL dream has died go to play in Switzerland. The lifestyle is much more family friendly, as the education for their kids is very good, travel is negligible, and it is very safe and clean. It used to be that a decent college player or ECHL equivalent player could go over there and play, but now you pretty well have to have AHL experience to get a job there.
The level of play does not have the intensity, talent, speed, or physicality that you will find in the AHL. The SWI league is where NHL'ers go to chill out, experience some new things, and relax, not ramp up and take the next step in their career.
Swiss hockey has been going on a long time. My old teammate's father played there as a pro in the 50's.