There is a lot of mystery around Pilea peperomioides. I suspect no one really knows how to grow them or what they should look like. After reading this article:
http://www.wildchicken.com/nat...
I think they are probably epiphytic and rambling, maybe a good candidate for a hanging basket in an orchid house as they also get a lot of water in their native habitat. Mine is growing in leca and is watered daily. I haven't put a cutting in an orchid pot yet but its on my to do list.