G Series- Pro?

I have it in my head to see whether I can use this as a "pro" kit over the next few months. A back taking its revenge on me for years of abuse has forced me to re-consider my options.
I've no problems with using this for my stock library work and I have no problems regarding the quality. Certainly in good light.
Its going to be interesting to see how it all copes with different jobs and different conditions & how well Panasonic puts this stuff together.
I'm not brave enough to dump the Canon 5D MkII outfit yet & my plan is to ease this in slowly.
It may all end in disaster & useless bits of broken plastic but I'm going to give it a try.