Unknown epiphyte, suspected orchid, ID unknown

[paulindr]

I was just given a plant by a friendly seller of mostly succulents. I attached an image. Roots are very fine. the leaves shout orchid. I suspect the roots do too, even though they are so thin. But exactly what it is escapes me and my plant friends (including botanists). Isochilus was suggested but I couldn't find one with the same degree of leaf overlap. many thanks for help with an ID.