A couple of things worth noting:

- I have had the SIDI combat touring boots for almost two years and I would say they aren't broken in even yet. Also, not especially waterproof, and their soles -- though very abrasion resistant -- have very little grip. Very treacherous in the ice and wet.

- Steel-toed boots are helpful for shifting, but the steel can be folded back over onto your toes in a crash and cause serious injury (as in broken or severed toes, depending on the design). A patch of plastic, rubber, or leather on the toe gives more feel in shifting anyway.

- As mentioned before, laces are very risky on a motorcycle boot. If at some point you need to get away from your bike (which you should if going down at speed), anything that can keep you associated with that soon-to-be 700+lb metal and plastic projectile is a bad thing.

There are lots of good boots out there, but it is hard to find ones that offer significant protection and yet are comfortable in many environments and can be used for walking. The ones I have used on a daily basis for years, in all kinds of weather, are some goretex-lined, Frey/Daytonas.

They are utterly waterproof and comfortable in all temperatures, have a stiff patch of plastic over the toes for shifting, and only take a second or two to get on and off (dual side zippers with leather/velcro flaps). They also have an effective rubber sole that has held up well, and are shaped so that they will not pull off in a crash.

The bad news is that, though very useful, these boots are not especially stiff and really can't be considered useful for off-road use. Maybe Frey/Daytona makes a boot that is good for that purpose, I don't know, but for street use these are excellent.