I wouldnt doubt it ... I had 2 hockey bags worth of stuff stolen from me through Purolator. Of course I didnt get the full insurance, and only got like 50 bucks back, instead of the probably 2000 that was in there.
My neighbor used to work for FEDEX, and he told me that unfortunatley that kinda thing happens all the time. Someone at at busy hub just throws the bags in the back of their truck and goes home with it. He said that the Toronto hub is where mine was stolen, ... such a busy place ... just think how easy it would be with thousands and thousands of packs going through there a day. I wouldnt narrow it down to one company bro ... Im sure that it happens everywhere. Just to lower your risk though I would do what your source asks, if he is a legit source. By the sounds of things ,... you do not fully trust him.
Mavy