Chem storage in polycarbonate?

These are a popular item at the local outdoors store in 1-qt. size.
Polycarbonate has the advantage of being unbreakable. Since I
keep my chems in a closet I don't need amber coloration. Does
anyone have a feel for the effectiveness of this material at keeping
out the O2? How about the lids, they're probably something else
like HDPE or LDPE?

I know about soda bottles (PET) but am reluctant to use them
because my 4-year-old nephew is at that stage where he believes
anything in a soda bottle must be soda...

Thanks.

Steve