I will say that unless I'm constantly reminded of the fact that CK has red hair and freckles, I'm going to picture Dean Cain in the role regardless of what the character is supposed to look like.
Probably that wouldn't be how it goes - the few stories I've written tend to be pretty descriptive (maybe too much so). Hard for me to leave out those descriptive details.
I'm flexible on the red hair and freckles - I just used that as an example. Still, CK would be slightly built, about 5'8", very fine features - I see him with a hawk-like nose and a bit of a weak chin, blond hair. Maybe grey eyes. Remember his character would still be the same as L & C CK/S though. So how does that sound?
He wouldn't be dying his hair pink, though.

Although I was taken by coolgirl's changed hair-colour pics.
c
oh, and "me too" about the criticism of the S movies.