I've been searching the net for 2 hours and can not come up with any info, blogs, forum post on fake Klipsch earphones. Lof references to other brands but so far not Klipsch.
On the other hand, reading about the kind of cable issues many have had with these earbuds, knowing there will be no support is tough. Without knowing how others have treated their equipment, I do wonder though can't you just be careful with them and they should be fine.