yes, even with HEN disabled (a fresh boot) you should be able to install official packages, like the ones you can get from your store purchases.
of course once you enable it then any packages can be installed, fake or debug too
Then removing the Package Manager if HEN is disabled can be an inconvenient for some users.
In an off-topic subject: I recently added a feature to wMM's artemis that allows to select between art.txt, art_l2.txt and art_r2.txt with START, L2+START or R2+START. So the user can easily choose a main cheat list + 2 optional cheat lists.
Maybe you could add support to this idea in ArtemisPS3 if you like it.
