Matt,
That sky looks very good for no filter. The reason I say that is that the sunny side of that shed is pretty high on the scale and the sky stayed right where I figure I would liked to have it stay, but usually doesn't for me.
Yes, the Koni-Omega cameras are different beasts that's for sure. They do do somethings very well and other things just so-so. I used a couple for weddings after I got rid of my Bronica S2A outfit and before I got my Hasselblad 500C. I really liked them for weddings, but for general photo taking not so much. The lenses are some of the sharpest I have ever used. I still have a Rapid M and a 200 body tucked away. The only lenses left are two 90mm's and a 60mm with finder. I too, love the 60mm, which is the same as your 58mm. Hey, maybe I should drag them out for the Delta and TMY2 trial in Xtol-R. Yup, I'll do that and post the results here just for the fun of it. I'll shoot a couple of woodsy shots and a couple of marina scenes as well. Hope I remember how to use the darn things?