So, I opened up my air box today. I found the 2 clamps adequately tightened. I could see no indication of deformity on the threads, so I took the ViceGrips to them.
I installed the @Hondbob air intake system with 3 miles on the machine. I am now at 3475 miles. I admit to riding some pavement, but that probably amounts to less than 20% of all miles. I ride in AZ and UT, where it is quite dusty.
The clean side of the air box was absolutely clean (short of laboratory testing!). The intake side had a VERY light film of dust. The filter looks like new. I probably won't even look at it again for another 5,000 miles. I have done nothing to the pre-filter, other than blow it off with a leaf blower a few times when I was "detailing" the interior. 😁
Needless to say, I am very happy with how the Hondabob air intake system is performing. As CID said above, I think it is taking in the cleanest possible air.
I have attached a few pictures for your amusement. In the picture of the air box, you can see where I drug my finger through 3475 miles worth of dust on the dirty side of the air box.