I think the vacuum systems are the way to go. A mask + goggles is even safer, but it seems pretty impersonal to me.
Then again, I'm the guy who wears just a thyroid shield (no torso lead) with the mini flouro (full garb for the big daddy C, though). I always wear face shield masks, which also cuts down on the amount your eyes are taking (read: cataracts). The articles say that, with the mini, it's basically only your hands getting hit with any appreciable amount of rad anyways. I try to save myself the neck/back pain and sweat of wearing full lead for the mini-C. Who knows, maybe I will have 3-legged kids?
Bottom line is that the correct answer is always to wear as much protection as possible... face shield for blood/rad, lead for flouro, mask/goggles/vacuum for Dremel, etc. In the end, you have to find a happy medium of safety, cost, and practicality, though. There's no easy answers here.
...reminds me of one attending I met's joke:
"What's the best way not to inhale nail dust?"
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"Don't do nail care."