There is not much debate left on the adoption of the JEDEC UFS technology. It has gained enough momentum and has proved a winner. No doubt, JEDEC UFS is a design and verification challenge. You might end up focusing all your attention on the JEDEC UFS, MIPI UniPro and MIPI M-PHY design and verification. Thus there are chances that an optional but important specification - Unified Memory Extension 1.0 specification (UME 1.0), might slip your radar. This specification is captured in the JEDEC specification JESD220-1.pdf.