A reminder for when I have another round of spare time (or someone else does): x11-wm/aewm does not honor these environment variables.
Fixed in tree
+ 27 May 2010; Kacper Kowalik <firstname.lastname@example.org> aewm-1.2.7.ebuild,
+ Respect user flags wrt bug 237698, do not pre-strip files wrt bug 252118.
+ Thanks coldwind and Diego for reporting.