I own an Oly E-M10 with lumix 12-32 pancake lens, and the very good Oly plastic fantastic 40-150. The reason I got the camera was just size, easy to take on my Yamaha off road bike, and nice to take around the town.
The draw back to me is the cost of other lenses, now if you can be content with just the these two say? then go for it and keep your K50 system. I also love the flip up/down screen, you can hold it waist level and touch the screen to focus and shoot, great street shooting camera. The EVF is nice as you get what you see. I dont regret buying the camera at all, but I also don't intend to buy any more lenses for it unless really good buy.
I have adapters and shoot all my pentax lenses with it also.
I will leave a link to my flikr page I have the cameraa/lenses in folders, only snap shots really but an example.
If you find a m43 body I have a 14-42RII to get rid of =)
ronald embree's collections on Flickr