For video it is often not practical to use an EVF. Also the K-01 is not a DSLR. It doesn't have the SLR part of a DSLR, so it's a D. It won't replace the K-5 or K-r. They will not build a DSLR without an optical viewfinder (unless they do what Sony does, but I think those cameras are quite daft, despite their good EVF). This is not for you.
Btw., what's the point of a K-01 with an EVF? It would be pretty much the same size of a K-5, with the same image quality, but an EVF, which after all is still inferior to an optical VF. At the price of the K-5, because those high end EVF are not cheap. EVFs have to become better, they have to become cheaper.
EVF will come though in a mirrorless Pentax.