It's unclear to me if this only covers "check out mycompany.com for alternative payment options" links, or if your link could be a "Purchase Now" button that go

It's unclear to me if this only covers "check out mycompany.com for alternative payment options" links, or if your link could be a "Purchase Now" button that goes right to a payment form. If the latter is also allowed, then you could set up a pretty frictionless experiences that completely bypasses paying the 30% Apple tax.