Any possibility of "importing" or allowing a native app touch-bar button to "pass-through"?

Man I'm loving setting up buttons for my touch bar.

There are a few apps that already have very useful buttons though. One good example is 1Password's vault selection button.

Currently, I have a BTT keyboard hotkey setup to allow a press of the Fn key to toggle BTT's touchbar. This lets me swap between my custom layout and an app's native.

What I've found though, is there is usually only one or two buttons on the native bar that I care about for a given app. It would be really great if there was some way I could integrate those buttons with my normal BTT bar.

Unfortunately that is not possible due to API limitations.