Doug,
Have you done testing on the Velcro strips?  They seem strong, have you had them pull apart?
I use bicycle inner tube on the end of my Surefire C2 to protect my clothes from the sharp knurling.  It stinks and makes your hands stink.  I haven’t found a substitute for that application.  I avoid using inner tube because of the smell.  
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Thermo-regulate, hydrate and communicate.