> I would probably go for that if I carried cash much - but I pretty much just use cards now.

i don't use it for cash, either. but it's extremely thin and is comfortable in the jeans front mini-pocket. much lower profile and no cheap plastic compared to their standard keychain knife:

https://www.rei.com/product/403028/swiss-army-classic-knife

the clip portion of it goes high enough on the frame where you could use it as a pocket clip, with ~0.3" protruding upwards.