Are you really asking this? Even your seed phrase, if possible you should divide them into separate locations. Moreover, the passphrase is something you created yourself which is just like your phone password. If I may ask, do you write your phone password somewhere? I think No. So it's not necessary to write down your passphrase because I think you should create something that you'll easily remember and hard for others to guess but you shouldn't create something difficult that you'll have to write it down. It's possible for someone to have access to somewhere you wrote the seed phrase but they can't have access to something in your memory.
I don't think a wallet set up should warrant different locations. I'm actually worried how a person that want a safe locations in many places. You can't measure the all the places to have the same security. Like your house can be safe for you to hide your seed phrase because you live there, you do almost everything in that place, but certainly the rest of the location can't be the same. The rest of the locations will be on assumption that itself which is bad for security.
Complicating a wallet security that should have been simple will lead you into another puzzle you may not be able to solve. Maybe you should learn to save your seed phrase in one location where only you can access or if you don't stay at home, like you travel alot, divide it into two, keep half at your home and take the half with you and a passphrase. This way even if you are not at home, you know the rest of the seed and the extension is with you.
