I believe at the very least everyone should carry a clutch inside a big bag. I always dislike when a woman comes into a working meeting with a humongous work bag and starts fumbling inside for a pen or something. Girl, leave the bag in the office and bring a clutch!
I have 5 Hermes clutches. A Jigge, a Faco, a Rio and 2 nameles vintage. Well, they are all vintage (I dislike the East/West Jigge). Also have a 70s trousse that I use a summer clutch. I'd love a 1938, and the Verrou, although it is so expensive that I may prefer it with the strap (which I have), but a vintage E/W Verrou from the 30s would be a dream. Now that I see your Octagones I want those too. I am not sure about the KP... I don't have a collectors mentality with bags, but I find with clutches, they are so easy to collect and so useful... that the temptation is there.