Weird indeed, but can't say they don't exist. No real example from repos, but from outside of FLOSS paradigm: http://aur.archlinux.org/packages/steinberg-vst/steinberg-vst/PKGBUILD (I have no idea why I didn't just replace unzip with bsdtar since the main one was already unpacked; should have been obvious)
Anyway it appears to work on every zip archive I've got. That's great, one down from now (possibly no need for unzip utility either for most people) =] Thanks for the heads up.