Polarized contact lenses?

After reading all about contact lenses recently, especially the recent
"nike sport tint" stuff, it occurred to me that it ought to be possible
to create a polarized filter on contact lenses.

Basically, you'd need a toric lens with the toric weighting, but +0.0
cylinder (unless, of course, it's needed for correction). I suppose
there's some difficulty that would be involved in actually applying the
filtration: you'd either need to apply some kind of coating, or
somehow figure out how to align things when the lenses are cast..

It seems that polarized lenses are good for cutting down on glare, and
might be comfortable enough for all-around use..

Anyone think this would be a good idea?