I am currently running my group through CotCT. We discussed it tonight and the group is going to switch up to Pathfinder rules. For the Barbarian and Rogue, all is well. However, I've also got a Favored Soul and a Spirit Shaman. There's no specific rules for them, but I don't see the FS giving me any problems. Taking the Sorcerer almost verbatim, giving the the diety favored weapon and clerical spells. Sorcerer progression. I think we might even just do the Celestial bloodline for ease (with maybe a minor variation or two). As far as the Spirit Shaman goes, I don't necessarily know what I'm going to do. I've not had a lot of chance to study them in detail with respect to the Pathfinder rules. Anyone know them well and have any thoughts?
Spirit Shaman is either a variant druid or cleric. Although they use druidic spells, I'd start with the Cleric, limit the shaman to one domain (or drop both; I've never gotten to play a Spirit Shaman above 4th level), and insert the other powers.
From druid, I'd take away the shapeshifting and plug in the new stuff. Instead of animal companion, you have spirit guide. So a choice between spirit guide or 'natural' cleric domain.
Again, I've never played the class long enough to get a feel for their distinct character.
In the end, the Favored Soul just decided to play as a cleric, and we ran the spirit shaman as is. Everything seemed to run fine, but for the grappler in the group. But that's a discussion for another thread.