Here are some of my thoughts on the topic:
Why you may not want a Google+ Page
1. It is one more place to post.
2. It is unfamiliar and there are fewer case studies at the moment to validate it.
Why you SHOULD get a Google+ Page
1. It's already big and getting bigger. It has made significant impacts on social media communications with surprisingly rapid adoption. If the people you are trying to reach are using it, it's logical for you to at least explore it and see if you can provide value by being there.