Totem Hawks

I've not yet auditioned these speakers, but have heard a lot of positive feedback.  Recently, I was told the woofers fail a lot.  I've tried to search to see if this is accurate, but have not found any QC issues.  I've not yet contacted Totem, but will likely do so.  Does anyone here have any experience with the long term performance of these speakers?  Also, if a dust cover is punctured on the woofer does that affect the sound production?

Thanks