The only reason I can think of is that Keychain only works with safari. Sometimes I prefer doing dev work in chrome, and then accessing the passwords in Keychai

The only reason I can think of is that Keychain only works with safari. Sometimes I prefer doing dev work in chrome, and then accessing the passwords in Keychain is kind of a pain. If there's a cross-browser way to access Keychain, I wouldn't use anything but that.