I work with mine, and have done for around two years and she's been pretty much full time for a year now.  
Although we have our arguments, on the whole we work extremely well together.  She adds around a third to what I would've done by myself.  I find her overly fussy in some areas.  She'll never just give a bit of frosted glass a 'dry wipe' with a scrim (for bullpoo purposes).  She's got to wash it, or spray it with a solution first.  She also spends too much time on doors too.
Potential customers tend to approach her, rather than me.  So I think she's good for getting business too.
I do tell her that it's okay to lower your standards a little; overall we still do a top job, but she won't; even though I've tried thumping her.
We don't have to talk much.  She knows what she's got to do and I get on with what I've got to do.  We're a good team.