Example of a 2 million dollar Bham area home with shower issues. Case has been resolved so I can post photos.

Curb


Glass Clip


Backer nailed through membrane at top of curb...no sealant


Resulting damage to curb


Cut corner of pan at shower floor and wall intersection; resulting damage to framing




Being on a slab will eliminate some of this from being possible, just take care of the curb to wall transitions and your wall perimeter corner conditions so your wall framing will not have issues down the road.