A7Riv and Westcott FJ400 trigger

[jstevensphoto]

Wondering if anyone has purchased the Westcott wireless system and using it with an A7rii or iv.   My old Paul C. Buff lithium batteries are getting old and tired and I am tempted to give the Westcott a try, but they recommend buying a Sony adapter for the Sony hot shoe.   Wondering if all the auto stuff (TTL, HHS, etc.) still works with the $20 Adapter?