Any mono wallet would be great. I have the double sided full wallet which has 6 credit card slots, one side is a coin compartment, then there is also a bill compartment and then 2 other compartments. I also have an accordeon wallet which is a longer wallet. It is slimmer (not as high as the pochette or international wallet) and it comes with a chain so it can be a clutch as well. I use to have the koala wallet but I prefer a slimmer wallet once filled with all my stuff and the koala seemed to be a very thick wallet to me. Anything in damier or mono would be worry-free, just throw it in your bag and you are set. I have seen a number of vernis wallets on Ebay where the edging of the leather peeled. I do not know if the owners were careless with them or not, but I am like you, I really do not want to be worrying about my wallet, for I already baby my bag as it is!!!