Wise Sons opened five days ago in Larkspur Landing (officially named Marin County Mart). I went there for lunch today and it was busy at 1:30. The first thing to know is that it's a bagel shop and not a deli (which I was hoping for). So all sandwiches are on a bagel or bialy. I had their Hot Pastrami #19 on a bialy, with cole slaw (on the sandwich), Swiss cheese, and Russian dressing, $11. I added Guilden's brown mustard from packets. It was tasty, but not what I was hoping for (a real pastrami deli sandwich). If you take it for what it is, it's probably good.