yeah, i think zowada hones his razors with double bevel
however the hart i saw had a single bevel
the angle of that one was also 14 degree untaped which is below specs and the size was 6/8 which is at spec, so the grinding must've gone a bit further into the spine. iirc mparker had one with very shallow angle as well, however according to zowada the bevel angle should be in the 15-16 degree range. they're probably able to maintain that spec better after the initial reports of problems which may have come from too shallow angles.