Hi, yes indeed, I have heard it, I have the Rhino Deluxe Edition of 'Dusty In Memphis' on CD which contains the original album together with 14 bonus tracks recorded between 1968 and 1971 in Philadelphia and New York (many previously unreleased). A superb package all in all.
Regarding the 'Dusty In Memphis' recordings, these were made during the late summer of 1968 at American Studios, with final vocals being added in New York.
As you rightly point out, at certain times that 'Memphis Sound' is unmistakable, 'In The Land Of Make Believe' perhaps being one of the most obvious examples.
Although Chips Moman did not produce 'Dusty In Memphis', Ed Kollis, Bobby Wood, Bobby Emmons, Reggie Young, Tommy Cogbill, Gene Chrisman, Mike Leach and of course The Sweet Inspirations all participated in both Dusty's Memphis album and Elvis' fantastic recordings at the same studios a few months later.
Very neat to have albums from two legendary artists made at the same studios with the same musicians just a few short months apart. Makes 'Dusty In Memphis' even more fascinating to hear (in my opinion at least).