I've just started out as a Witch Doctor, and I recently got the ability that allows me to throw a jar of spiders.
However, I really like the poison dart ability! This has already become a staple attack for me. The spiders are nice, but aren't particularly useful... yet. I like them better than than what I've got as a secondary ability right now, though.
Is there any way I can use both of these skills at the same time? Trying to change the skills seems to indicate that I can only use one or the other. Can I not use both?