I have not yet, but I plan to try Lilaeopsis mauritana as a carpet for my next nano tank. Some have carpeted with it before on here(forum), sadly I can't recall any names though. Mine will be a no co2, but liquid fert/excel dosed tank, medium light, and still not 100% on substrate, for a 7 gallon cube that will have some taller plants in the back so it won't be covering the whole thing.
Ah! found one of the journals of a micro sword carpet tank here.. unfortunately their micro sword is Lilaeopsis brasiliensis though.
I have a nice L. mauritiana rug in my 75g and have had L. brasiliensis in the past. Neither have any special requirements. They're like any other plants, just provide proper conditions ( nutrients and light) and they do their thing.