Our Bounder had them when we bought it new - they were pretty benign until we replaced the tires this year. I was given a tool that was supposed to help the tire changers get the bands off the wheel, but apparently sometime between 2007 and now Tyron started supplying a second tool to compress the tire to allow the bands to be removed - I did not know anything about this second tool. My tire guy spent almost an hour getting the first band off - the second one went a bit easier but I told him he could throw them away, or mount them on his wall, or whatever he wanted to do with them - they won't go back on my RV.
Do they work? According to testimonials they do. But I'll take my chances without them, knowing that any tire guy that CoachNet sends my way will be able to dismount a bad tire without any fuss at all.