KnuckleWear

First developed in 1919 by Leon Bean for Civil Engineers, Contractors and general outdoor workers, and still made by Chippewa in El Paso, Texas, they feature a classic 1911 Munson last (sole outline), and Goodyear welt (the material sewn separate between the upper and sole). Durable oiled-leather upper, cork and Vibram® outsole shakes off mud easily and can be resoled. Molded sock (interior lining) insert. USA. #UA54809.

http://llbean.com (800) 221-4221.
They have a separate heel that will stop against a kick-pedal. The non-lug Virbam® soles are compatible with operating a rocker clutch. The upper allows the free ankle movement necessary for quick release. Of all the Engineer boots I've studied, this is the one for motorcycle riders. Weight - 3lbs. 4 oz. or 1 lb. 10 oz. per boot.
Harley-Davidson® should take note. Those deep-lug waffle stompers they sell will hangup at the wrong moment get you killed. Ditto for those hammer loops on utility pants....pull you into something if they get caught. I've never seen anyone hang a hammer from a loop. What good are they?

Just checked with them to see if they were available in steel toe. They are not. But, still a great choice for motorcycle boots. Thanks for posting.

Jack