I may have missed it (though a quick skim didn't turn it up), what is the party composition that you felt like you need Res:Wis anyway?

One of my tables has a Barbarian/Rogue multiclass on less than optimal terms (Minotaur), but he also has a Bard (primarily at least) and Paladin to support him, does your party lack support characters or do you just not want to rely on them?