Rupicolous laelias in moss?

[Claire25]

Does this sound ill-advised? The plants in question are a fournieri and a crispilabia, which I've ordered from Andy's and should receive tomorrow. I'm not sure what potting medium he uses (guess I'll find out tomorrow ) but I'm concerned that a r-e-a-l-l-y freedraining medium like gravel or aliflor is going to be too dry for my conditions...especially in the 2 or 3-inch pots that they're coming in. Would prefer to pot them into moss to simplify watering (for me) but if this is a no-no I'd appreciate your advice.

Whaddaya think?
Claire

PS I have a laelia sincorana in moss that's doing really well...it's not really a rupi, but it's the closest thing I have for comparison.