Heh... 1600 miles. Get back on this thread after you've done 10k.
QR skewers are so small in diameter, I'd never trust threads that size to take torque. A quick release works with those threads because you are applying tension without torquing the threads. In fact, I've seen "bolt on" skewers fail before; in this case, it was during a race on the track. Don't know if the failed skewer caused the wheel to come off which caused the crash or the other way around, but it doesn't change the fact that in the aftermath, the wheel was off the bike and the skewer had failed at the threads.
There are a few absolutely critical bits I don't care to save weight on. One of these is the skewers.
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Cat 2 Track, Cat 3 Road.
"If you’re new enough [to racing] that you would ask such question, then i would hazard a guess that if you just made up a workout that sounded hard to do, and did it, you’d probably get faster." --
the tiniest sprinter