I've become fascinated with epiphytic Utrics in the short period of time I've been here. Coming from an orchid background, I find them to be quite similar: big flowers, epiphytic in nature, etc. I've been through many threads where they've been tried on TF, cork with moss, or net pots in LFS with fairly successful results.
I also very recently found a U.S.-based vendor for Hygrolon, a fabric-like material that wicks water while providing an airy environment. It doesn't break down over time like organic medias and is more sustainable than tree fern. I think I'm going to try a piece with some orchids and see the results. I'll post as I go, once I get it going.