I also have a Sogo Gotris. It is mounted on cork in a huge mass of sphagnum and has beautiful aerial roots. I water it every other day, but the best part is that it has been in bloom since I bought it last June.
Since you don't have to worry about the roots, I would highly recommend this type of culture. The plant seems to love it and I really like the looks of the whole thing. It is the only mount I have kept out of fifteen or so...
For what it's worth, this is my