Packaging: Where to install demo apps to?

Hi, I am preparing a package for submission to Fedora.US/Fedora Extras. This package comes with a couple of demo applications I plan to put into a separate sub-package. Where to install these applications to on FC? What do Fedora conventions recommend? IMO, they should not be installed to bindir (/usr/bin), because these applications are "not really useful". Installing them to datadir (/usr/share) or pkgdatadir (/usr/share/<package>) also does not seem appropriate, because these files are architecture dependent. Remains $libexecdir/<package>. Ralf