[Ash-Ro060708]

Since the bamboo slats are over wire, it makes it nicer on the rabbit's feet and the wire would probably last longer and not rust as fast. That's a neat idea, I would do it for my outdoor rabbits when I rebuild their cage(if I could find bamboo like that).
If you had an wire bottomed guinea pig cage and placed the slates closer together and put fleece on top of the bamboo, it should work, you would just have to make some kind of pan under the cage.