Review (2/5): meh
They were indeed gentle - wish they were a little more substantial along the back area. Annoyingly difficult to keep a grip on them in the shower. (It felt a bit like trying to wash your face with a soapy slice of American cheese.)
I found it much easier to use them at the sink to agitate cleanser without getting the back side wet. For me, they kinda work and kinda don't - I don't see myself using these every day, at any rate.