Getting a G1 to supplement my Pen e-p1

Is this totally stupid? i am thinking i can get a great deal on a used g1 body, and i am so tired of not having a viewfinder in bright sun, i only use MF lenses.

Is it stupid, should i get G2, GH1 or even GH2, i must say that money is a problem, but still dont want something way worse, is the difference between G1 G2 GH1 that big? i mean iknow GH2 is another world, but still it costs allot and would rather wait and buy it in a year or 2.

Can jpeg colors be set to replicate olympus jpegs, or at least get better than stock jpegs? will i miss the IBIS, i do shoot low light , but i do got quiet fast lenses, since i use TV lenses.

btw. Movie mode, touchscreen is no concern for me, i do photos. What i do wont is good image quality and good and easy usable manual settings

thanks for your time!