Eh, I also do that and in fact, archlinux.org and all of its servers are also hosted on Arch Linux. It works really quite well and there is little reason to suspect it should be any less stable than other distros.

Last I checked the Arch website was run by a Debian box, not to mention funded by Debian.

I'm fairly knowledgeable about our (Arch Linux) infrastructure because I set up a big chunk of it. I'm not sure where our donations come from, though.