Just came across photos of this sweet custom fixed / single speed cyclocross frame by Kusaka-san and
his newly re-launched Vivalo-brand. There was
that Kinfolk "Urban Bike" built also by Kusaka already but the fact that
more and more of these keep popping up everywhere indicates that dedicated steel sscx frames are becoming the thing
to be riding. And why not?
See
the whole photoset here.
EDIT. And this, it's bit
different, though...