I've been through every spectrum of footwear, from traditional to minimal to barefoot. Not barefoot as in a "barefoot" shoe, but running with no shoes.
When I hear statements like:
"I just don't want to end up with microfractures because I didn't adjust enough."
I wonder if you need to check your premise.
What do you feel you'll get out of minimal shoes?
Why wear shoes that will make your feet hurt (even if you'll eventually get used to it)?
What do you think you'll gain that you can't already do by "adjusting enough" hopefully without injury, to minimal shoes?
What are your current shoes not doing for you that you think a pair of minimal shoes will?
I came to minimal footwear through injury from running marathons, i.e., traditional "motion control" running shoes were causing problems that minimal shoes solved.
"…the MT10's look to be the "hiking boots" of the minimalist shoes, and that's the appeal to me. Strong, protective, but lightweight and comfortable."
After having owned and loved two pairs of MT10s with 350+ miles on each pair, both running and backpacking, I don't agree. Lightweight and comfortable, yes. Strong and protective, no. Relative to bare feet, sure. But the lack of rock plate and continuous rubber outsole will leave you pretty vulnerable to sharp rocks, thorns, and bruising. If you're not mindful and hit a rock accidentally (which is bound to happen), you're going to hurt.
"I definitely want a rock plate."
NB MT10s don't have one.
"My walking in the Inov-8's has been occasionally long-distance (10+ miles in a day) but mostly just around town. But I've used them almost exclusively."
In the grand scheme of things, 10+ miles isn't that much distance, and doing it around town is much different than on rocky trail and downhill pounding with or without a pack.
Finally, perhaps the best advice I've ever heard concerning shoes (especially applicable to all the people entering the "minimal" market):
Don't wear shoes that make your feet hurt.