By "Desktop" - though, I mean users who are planning on downloading/installing various productivity utilities, applications, etc... to do their job. Creating Reports, Slide Decks, PDFs, Spreadsheets, charts, diagrams, IM apps, Skype - whatever random app they want to use to do their Job.
I've never seen an OpenBSD user in 20+ years of supporting Desktops in Engineering and Corporate environments - Windows obviously, but lots of Macintosh OS, A nice run of NextOS, Lots of FreeBSD, umpteen distros of Linux (for a while, that's all people seemed to be running), many versions of Solaris, tons of Irix, a handful of HPUX users, and even a couple AIX users.
But, in that same time - I've seen OpenBSD squirreled away in all sorts of Appliance/Network/Firewall duties.