Lorraine, I saw some wooden type ones that don't use the poles I don't believe (if I recall correctly). I like the looks of those better. No, I wouldn't want to use those with the poles. I would fear they would wear through and puncture the ceiling eventually!
I think the one I saw was like a big cabinet on the top with a shelf underneath and no poles at all above it and it had wooden slats/boards for the side supports that matched as the frame. I think I saw one at Meijers and then maybe in the JC Penny catalog but I will have to check around. Looked really nice if I recall correctly. It wasn't plastic but probably wasn't "real" wood either.