Don't know what your current thoughts are for Shazam from facing couples.
We were leading a C2 teach using "old" Mike Jacobs teaching material and I'd never
seen Shazam from facing couples.
In my opinion, it's perfectly fine. Two facing dancers can do a Shazam by stepping to R-H, turning 1/4, and U-Turn Back.
This call was once considered to be a R-H only call for this reason.
I call it occasionally from facing dancers, but not that often.
It's never a Hinge, it's always an Arm Turn 1/4.