I'm running two Ptolus one-on-one campaigns, and I would love to have someone DM one for me to play in. Co-DMing would be fine by me. We could switch off being player only and DM if that was more interesting than just DMing a 1-on-1. I would prefer it be one-on-one because I'm a very frequent poster and I suck at patience. :D
I've built a website for DM's and Players to have all the info they need to play in a Ptolus campaign. It's even mobile friendly:
http://v3p.org/ptolus