[Omega]

I see two possible problems with KY:
-Residue after it evaporates.  I'm not sure what KY is based from (oil?  petrolium?  other?), but I think it would be likely to leave a residue, or not evaporate at all.

-Reaction with strip.  Again, I'm not sure what KY is based on, but I know that certain oils, or something, can have corrosive effects on some rubbers.  That's why the recommend not to use like, baby oil with condoms, or something like that.

Anyway, I haven't experimented with case windows and KY to prove either of my possible problems, and maybe someone here has, but I'm just bringing up my thoughts.