Is it worth having all 3 arcane pets?

[Zeus]

I've been wondering, for a rogue, is it worth it to have all 3 arcane pets?

I currently have Hammerjaw and Samael, but as of late, I've been debating getting Glacian. Any thoughts on this? Any rogues that do have glacian, is the increased defense really that great?

I know that his passive attack is rather lame, but what about everything else? To those who have gotten Glacian & have another arcane pet to compare it to, were there any regrets? If so, which?

What I'm asking is, right now: Hammerjaw and Samael each have their different uses. Sure, a Samael will boost up my own damage considerably. However, a Hammerjaw will boost up my entire team's damage considerably. Is there any use for Glacian in my inventory?