Mr Grimshaw made some very nice jazz guitars which were very affordable in comparison to American guitars of similar quality. Unfortunately his taste in sound meant that the electrical components were designed to give a clean, rounded tone (rather in the same way that Les Paul insisted on Gibson turning out his Recording models). All his guitars played well, but the electrics were not meaty enough for most purposes, and other makers (such as Zeimaitis) were producing better sounding flat tops and electrics, so the arch-top guitars are commoner than others.