Having poker chips on the table alongside the cash gives an appropriately seedy feel.
(But this KS is US-only anyway.)
Yes. "Alongside" is the best way to say it.
For the price of these KS chips you could do better. I'm not crazy about the style. They're kind of generic. For that kind of money, I'd like to see something more thematic.
Can you imagine if GF9 let the artist that did the paper money do poker chips?