No surprise there
The only viable modern desktop is x64, although there's possibilities of some of the ARM kit (if it increases in power) or MIPS (If the Loongson chip becomes a bit more powerful and economic to purchase) in the future. It does not help that the supporting ARM chipsets in many tablets, etc, is still extremely proprietary.
There's been an entertaining thread on an OpenBSD mailing list recently about the feasibility of running non x86/x64 kit as your main desktop. Everyone else's opinion is the same as the one I'd come to : it's not viable. The fastest non Intel kit out there is a old PowerMac, and even that's slow - also note that the dual core PPC is not supported by all OS. The fastest usable Sparc64 kit is the Sun Blade 150 and that's bloody slow. The Blade 1000/2000/1500/2500 series are slow, power hungry, quite noisy and an FCAL controller makes storage annoying. Anything newer is *really* noisy.
SGI kit is waaay too slow, albeit pretty.
It's a real pity, because in addition to non Intel kit being neat, it's useful to be able to prove your software on different endian architectures.