Faith is unevidenced or poorly evidenced belief. It's truth value is nil.
Skeptics generally don't claim to have faith, religious or otherwise. A skeptic, by definition, wants evidence before she believes.
Have it both ways? You can have evidence based knowledge, or unevidenced faith. Without evidence, how do you differentiate truth from fiction?
No, there are 2 kinds of skeptics. Your kind and the the general kind who doubts even evidence as a method and point out the limits. You are the first kind and I am the latter.
So if I don't have evidence for something I do, I do something else. And indeed for a part of it, I use faith.
"... Philosophically interesting forms of skepticism claim that we do not know propositions which we ordinarily think we do know. ..."
So when you claim X is Y, I simply ask how do you know that and for knowledge is Y, I ask how do you know that.
So here is the problem of the everyday world for most simple way to do it.
Someone: I know X is Y and not Z and act accordingly.
Someone else: I know X is Z and not Y and act accordingly.
Me: One of them don't know, so I check if I don't need to know for X and act anyway.