2019 Forester Sport. Love the Orange.
+1. I have been driving 4WD vehicles to Tahoe since the early eighties and have never been required to chain up. They always closed the road first. I still keep a set under the seat and have never been asked to show proof.If the rarely declared R3 conditions ever occur on Sierra roadways, you will be installing cables/chains on your Subaru.
As mentioned, roads are usually closed before that happens.
Somewhere there is a Ca state law that requires carrying chains even if you never plan to use them.