Hi, I am one. Although I think I would have problems with the brighlines. Using an external viewfinder is fine for wides, but not for "normal" lenes for me. Although from quality viewpoint, the limiteds are the most interesting Pentax lenses after the K series (and I had used quite a lot of the M and later lenses, as well as AF from other makers for my Nikon. I guess I am a Luddite and proud of it, after all <g>)
Good light, Frantisek Vlcek