I've mentioned such culture before
Vase Culture
This picture is very old, the moss is gone, and the brown thin roots have been cut off.
I have two Vandas in this culture, both has since grown almost as fast as in summer with full sun and greenhouse conditions.
The roots were small when I had them in baskets, but since giving them vases they've come on great.
I mist the roots in the morning, and fill the vase with water then empty every few days, using fertiliser once a week or so.
This is a very popular technique in Europe, and has been past on to parts of the USA I believe. it works for alot of Vandaceous orchids which would otherwise only grow well in baskets.