Returning from a client visit this afternoon, I was going south on Hwy 6 toward Hamilton when some ass-hat in an old Protege decided that the flow of traffic doing 20 over the limit was too slow for him. So, he pulled into the seldom-used centre turn lane and proceed to drive for about a km or so passing half a dozen cars... and kicking up a series of rocks, tire debris and other automotive detritus that had accummulated there. I caught a nice-sized rock off the front of my car despite not following too closely, avoding cracked roads, and bushes, etc. etc.
The 3M tape is a great idea and having seen how well Mitchell 916's Saab front end is holding up with it on, I'd recommend it to anyone concerned about the sand-blasted front ends.
BTW, Barrie, that comment got a 5 from me. Well done!