If so, I would love to hear what you did.
I am contemplaing this for my bathroom, round my claw foot tub. The tap end is about 4" from the wall, and there is a high window that overlaps the tub space, so doing any kind of shower thing is difficult, but I thought at the other end (about 9" from the wall) I could use the concrete as a shelf for shampoos and stuff. And yes, I know I would need to do the back, too, and tile the walls! We do have one of those hoop shower curtain rings, but I find it restricting - my last shower was a 6' x 3.5' walkin with a window and a bench .... ah, those were the days!