Hi folks I just picked up a sweet deal on the PL15 and GM1. Such a nice lens! Esp with the aperture ring. I love the small set up as a second body kit but miss an EVF. How is the EVF on the GM5? Is it usable and worth the upgrade? I like the look of the thumb wheel that changes setting on the back on the GM5 too. Any other reasons to upgrade that you have found? Thanks!