I am an exercise physiologist. The bottom line is that most achilles injuries are repetitive stress/overuse injuries. Even if you have been running many miles, and adapted to barefoot style shoes there can still be micro-tears which go un-noticed for many months or years. When someone ruptures their achilles it almost always is not a 100% healthy tendon, usually not even 50% healthy. The bottom line is that if you start feeling pain there it is probably too late to cut back a little an hope it heals. You really need to rest it for a good amount of time. And do some support exercises.
I agree that standard running shoes cause more injuries than barefoot, I wear barefoot shoes myself, but that does not mean you are immune to overuse injuries. You can have whatever footwear you want and still get overuse injuries, its just part of life.
If you rub 2 sticks together over and over and over forever they're going to turn to saw-dust, it doesn't matter if you're wearing gloves or not.
Classically for overuse injuries it is suggested to decrease the irritating activity, and increase support. Most docs will tell you get more supportive footwear, because for 90-95 of patients who are not barefoot that is true. For someone who is barefoot and going to a doctor for an overuse injury I think it is the patients responsibility to know that increasing support means doing exercises or cross-training to improve their foots own muscle and ligamentous support. If they don't know that, maybe they should be wearing regular running shoes. They dont' need to know the specific exercises, but those can be discovered.
In other words, you went to the doctor complaining of an overuse injury. The doctor told you, you have an overuse injury, and that you should rest and get some better support. For you this means improving muscular support to the arches and ankle stability. The bottom line is, for these soft tissu injures there isn't must a doctors office can do, there no pill, test , or cure. When I see someone on the schedule complaining of achilles pain, I know they aren't going to be walking out of the visit cured, and it will be months before they are back to normal.
Can you tell that