Since there was only positive feedback to the idea of giving some users signoff permissions I went ahead and created the necessary group in archweb. I've created a test user and clicked around a bit and it looks like it works as expected so I'll now start creating accounts for testers.
I've already received 4 responses to my initial mail about this so I'll start by creating accounts for those first and see if everything works as expected.
If anyone else is interested in becoming a tester, feel free to send me a mail including your desired username and your full name. I'll wait for feedback from the first couple of tester before handing out more accounts though so expect some delay.