If you've found TC105n wheels with both hubcentric rings and caps, I'd love to see it.  I'd rather have both, but I was informed by the company I bought these from that it was one or the other with this specific wheel.   
I have other wheels with both rings and caps, I am quite aware that it is possible.  But I was informed that WedsSport, in trying to keep the weight to a minimum with a cast center, milled it in such a way that it was rings or caps, but not both.  The guy was willing to send me either, so I'm sure he'd have sold me both if he could.   
  
Interesting...  I know exactly what you're talking about, but I don't see that at all.  I think the sidewalls are sufficiently small to avoid that.  There is more pinch than I was expecting, but I don't think it's that bad.   
I'm trying to make myself see that, and I can't.  Hmm..   
  
LOOKS great, but I'm sure it won't handle or ride as well.