Cowell/Ferneyhough Unconventional Meters

[Joey]

Just wondering if Lilypond can handle this type of situation;

In Ferneyhough's etudes transcendentales,
he employs meters such as 2/12 or 2/10,
acting as literal subdivisions of the semi-breve.
This of course translates to n-tuplets,
but frees up the score (and mind) a 
bit so that one can really focus on
a clear nested tuplet formation/interpretation
within the general overview of a tuplet-based meter 
without a general increase in tempo (as one would get in compound 
time if adhering to the same principle).

I'm just curious if Lilypond would be able 
to handle something along these lines.


Basically I'm simply looking for the ability
to notate "n/m" meter without much trouble.

Thanks!