Wow, I haven't been here for quite a while, and things don't change much - people who don't use the K-01 continue to bash, and those who do continue to love it
I've been using my NEX-5R a bit more than my K-01, but there's just not an ounce of merit in calling it a piece of garbage. Auto focus speed with updated firmware is definitely workable. Stabilization is great. Image quality is fantastic, and all I got are cheap lenses - the most expensive one is my FA 50mm 1.4. Bought an anti-glare screen protector, and I can use the LCD under direct sun light. I don't feel the need for an EVF.
My NEX is probably a bit better tool to take pictures, but the K-01 isn't just a tool. It's a work of art that happen to have a bonus feature of taking excellent quality pictures.