I found a post from April where there was some discussion on the faction tables for brownies.
According to the table, there should be sufficient positive faction hits from being a Tunare (150) worshipping Druid (150) in Wolf form (500) to use the merchants. However this is not the case. The brownies are still dubious to me under these conditions. They are dubious to me both with and without wolf form, it would seem that it is not providing the proper faction adjustment.
Here's a quote from 2000.