I just had a good experience under warranty with Rogers too. They don't look at the unit before you return it. They send you a replacement unit by UPS and then you return your unit by UPS with a label that they include. Not sure how they will react if it is obviously your fault....
Replacement housings are still not available. Here is the link
for Promobility which will get them eventually (and which has the advantage of being located in Canada).
Better holster? Seidio Swivel Clip for the 8700c (works perfectly with the 8700r). I have it and love it. Lots of threads on here; this
is the review from lgreenberg.