Yes, that emulsion would lift if you looked at it too hard - most of my shots are in glass slides (the sleeved film seems fine though). I have 2 rolls in the freezer, probably dead.
I imagine you could get in the ball park, Delta is pretty amazing film and I have run it in Rodinal (but at 3200, so no shadow detail and difficult to print negs - grain that big, each chunk seems like the developer treats it as a separate little shadow).
Part of the beauty of Polagraph was that warm color, too (thus I'm digging through my slides to dupe some for lith printing - I have some papers that warm up really well in lith). Printing it in color was always pretty astounding. One of my friends is one of the top food & bev shooters in the US (all those Velvia-cocktail photos in the TGI Fridays menus are him), he'd do gallery shows of nudes with Polagraph that were stunning printed up big. I have one framed, it's a treasure for sure.
It was a simply glorious film. That and Ektachrome 320T are the ones that make my heart hurt. 320T pushed 3 or four stops was a thing of insane beauty.