goodtimes
Expedition Poseur
how much difference do boots make when I'm wearing Solomon high top hiking boots? they're made of leather
Leather boots, even hiking boots, provide a terrific amount of abrasion resistance -- but that's about it. They offer very little ankle support - which, depending on your style of riding and where you ride, will range from 'important', to 'critical'. They often times don't have a very rigid sole either. When you are standing on the pegs all day, a rigid sole cuts down on the fatigue.
Foot and ankle protection is just as important as knee, hip, elbow, shoulder and back protection (all of which are trumped by head protection, IMO).
Personally, when I'm on the street (commuting), I'm usually in a relatively inexpensive Olympia Airglide jacket/pants, hi-top work boots (leather, steel toe), helmet and gloves. When I'm out on the trail (or wide open ranch roads, etc) I step the gear up a notch -- including the boots.