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?