I have acquired my first Tolumnias, a pair of NoIDs picked up at a local farmer's market for $5 apiece.
My personal favorite mounting method is on a cedar or redwood raft with the raft filled with NZ sphagnum moss.
I have used that method for almost all my mounted orchids that were grown in-home. It worked well in those low humidity conditions. Here, on the windward side of the Big Island, rainfall and humidity are higher than what I'm used to dealing with. A Dendrobium species mounted on an 8" x 8" raft filled with NZ sphagnum moss when hung under an eve out of the rain but still subject to morning dew and the naturally humid air, is taking about 3 days to dry out, so far.
When I bought them it was hinted that they would not do very well if just stuck out onto a tree, we're too wet here. So, l I looked into Tolumnia cultivation requirements. Sure enough, they do not like their roots staying wet very long. They need to dry out quickly and stay that way for a while.
Being still hung up on my sphagnum moss and raft system I've decided to try this:

It will not allow me to post a link to a photobucket pic. I cannot get my questions properly asked without showing 2 photos to illustrate my intent in order to ask for thoughts on its viability. How do I get allowed to post links to photos? If I can't, I withdraw my questions.