What I meant to say before was that credit and debit cards stored in apple watch are independent from credit and debit cards stored on iphone, so you can go directly to the watch app on the iphone and store any credit or debit cards you want on the apple watch without having to store those same cards on the iphone’s own wallet app first (i.e., the iphone’s own wallet app can remain empty). Because of this, I believe adding credit or debit cards to apple watch can be done even when the paired iphone has no passcode just as long as the watch itself does have a passcode, though I haven’t tried it yet. I never said you could add debit or credit cards on an apple watch without using the paired iphone at all, I only said that it’s not a requirement to also have the same credit or debit cards stored in the iphone.