Apple Watch rumored to get Taptic Engine-based Solid State Buttons

Makes sense to me.   One less point of failure, and one less point of water ingress.   I wonder if they can make a digital crown that feels like its being spun when it isn't?   The Taptic home button on the iPhone 7,  as well as the Taptic Trackpad on the MacBook Pro have both blown me away by how real they feel.  Something tells me they can pull this off.