Personally, I use the Wristlets mainly as "wallets" because I can't really afford most of the Coach wallets (as beautiful as they are). And when I just want to run a quick errand and don't feel like carrying my normal or larger purse, the Wristlets have been pretty useful when I just want to use my Swingpack (which is generally pretty small) - I just attach the Wristlet to the outside of the Swingpack so I can fit additional items inside my Swingpack. But I wouldn't feel guilty about not buying a Wristlet to match my purse if I didn't feel the need for it - especially if your purse is the larger size unless you're using it as a "wallet" or something like that.