I live in one of the wealthiest parts of LA and I get comments on it a few times a month. But this area is old money so a lot of the rich people here don't have the latest thing (unless it's a car) -- in the bay area I'm not surprised it's common. I also have the Amex Platinum and it gets about the same number of comments. When I travel, especially outside the US, I get comments on it about 30% of time I use it! lol. Metal cards are extremely rare, if non-existant, outside the US.

I haven't personally heard about the CSR card being commented on, but I've seen people comment on the Uber card. I almost feel like Uber/Barclays stole (or will soon have stolen) Chase's CSR customers.