Full height.

       A bit of a double whammy?  
ONCE   - To many, it looks more like a Tradescantia than an Orchid.
TWICE - Not as easy to check, but I think Ludisia Discolor may be the only terrestrial species, though there are other varieties within the Ludisia bracket.
"The Jewel Orchid (Ludisia discolor) is an unusual orchid species that grows spectacular dark, ovate-shaped leaves with pink veins. Jewel orchids bloom once a year, producing whitish flowers growing on long flower spikes. Unlike many orchid species, jewel orchids grow in the soil, prefer the shade, and are grown for their dark foliage rather than their exotic flowers."