Grow walls-a blossom or a bane?

[terrestrial_man]

I have noticed in my visits to different sites of both European and American growers that some use a wall of heavy hardware cloth on which to hang mounted
orchids. I have also read of something similar being used in terrariums/vivariums with the use of coconut fiber sheets or other means to accomplish the mounting of orchids or other epiphytes.
This is a great idea for use in a greenhouse or is it frought with a host of problems that make it an interesting thought but a practical nightmare to do??

Any thoughts or experiences?