In my latest game I took Halsin with me to kill the goblin leaders. I ended his bear form and had him follow me in his human form. What surprised me is that there was no dialog regarding that. No goblin stopped me to ask what that druid is doing in their camp. When I talked to Minthara she had the normal dialog. Neither did she make any comment about the druid nor did Halsin say anything when Minthara talked about her hunt for the druid camp and that she'll find it by torturing her prisoner. Same thing happend with Dror Ragzlin. He and Halsin just ignored each other.
Is that really intended? It seems strage to me that noone cares, especially since Halsin warns you that you will have to kill everyone when he joins you.