I recently put formica down on the floor of my 4' x 8' coop. How can that not be good for chickens, since it is soooo durable for counter tops? My chicks are only 3 weeks old, and when we open the walk-through door, they scatter, and slip and slide as they try to retreat to the run, outside. I have pine shavings, but only a couple inches thick. Before I put the shavings down, and first moved the chicks in there, they pooped on the floor, and the stuff just slid right off after it dried. I didn't glue it down, I used sheet metal screws with hex heads on them, so I can easly pull it up and replace it, or do a thorough cleaning.
I'm a newbie to the whole chicken thing, and from what I have gathered on here, some seem to over-analyze things too much. If my chicken slips on the formica, it doesn't mean it's bad for my coop floor. I understand that them coming off the roost, they may slip, but I think I'll consider it trial and error as a newbie, and go from there.
My suggestion to the poster is, if you have the material and you want to utilize "on hand material", GO FOR IT. I don't think your chickens will mind it.