The EVF is great - especially if you like using manual focus lenses or Lensbaby type lenses. For me it was worth the cost to change just to get that.
Welcome. Your amongst friends here.
The jpg thing is rather nice. I do raw always but as you said,
sometimes the jpg just relaxes you.
The art filters from the Pen have their place.
Enjoy the forum and post some images so we can see what you see.
As someone who is still in the reading/researching stages pre-buy mode, I'm interested in hearing a bit more about this aspect. Are you saying that without the EVF that using old OM-! manual focus lenses would be easier and if so, how so? I will note that I have read that for those of us who wear glasses (especially progressive lenses?) that for manual focus that the EVF is a big plus.