I feel the same. Ever since (thanks to this site as well) i started carrying my EDC religiously, I have yet forgot, or locked up my keys by mistake. I for sure never forget my EDC....EVER!, so i have trained myself to treat my keys just the same. I tried the walled thing, but i have a couple of long keys that are a little big for the wallet, so i usually keep the spares on my EDC ring which never leaves my pocket.......as where a wallet or the main keys are frequently removed.