What are your thoughts about Filson bags?

Hi everyone,

I am in the market for some BIFL luggage. I came across some options made by Filson. I don't have any experience with the brand. For example, I am curious about the Surveyor Pullman and the Surveyor 36L Backpack. I like the aesthetic. But, how are they in terms of build quality? Any red flags? Would you recommend a different brand?

Thank you