I goofed this morning on some shares and had some duplicates. I auto post from my blogs to Facebook using RSS Graffitti. The shares to Google Plus I post manually.
I am using just my regular Google Plus account because otherwise I find people start to circle you in several places and it's impossible to keep up.
I am at
http://goo.gl/Yectf
I cannot say that I'm 100% sold on Google+ but I believe --- as you say --- Google will not go away on this. It is going to grow in popularity so best to embrace it. Since search is still the A1 method for people to find you --- i question why we would not pour more time and effort into a relatively open site like Google+.
Adding content to walled gardens like FB and LinkedIn probably has to happen but I don't think it's going to be the main driver of business growth.
I can add page managers to our 90 Minds Page -- what is your Google+ main email? @MarkChinsky