I think that Wands of CLW make magical divine healing a little too cheap, both in terms of actual in game cost and in terms of narrative importance.
I think a more believable way to offer the same thing, but not step on the toes of actual divine healers is something like a "First Aid Kit" that has 50 charges, that can be used with a heal skill check to restore the same amount as a CLW wand.
It offers the same kind of healing, but makes a lot more sense from a narrative point of view. You have a person with some first aid skill bandaging up the party in between fights.