How are these working out for you and how long have you had them on?
I've had a set on for 4 days now. I haven't experienced the other things that you relate, but the "raw" (gnarly angry, etc.) sound - yes I think is just how these strings are in the beginning - and as you said, particularly open strings (pizz or Arco).
My experience so far has been pretty much what
BassiklyAC has reported in this thread - and that makes me want to stay with them. I hear improvement pretty much every day and yes, every bass responds differently, but I have a good feeling that they will bloom into the beautiful string that he has described.