I have two rim locks on the rim I use for my trials tire, so I can run lower pressure on my YZ250 when it's wet and cold outside. I can't tell you if the Damper does much, but it makes sense to throw one on.
If you like fixing flats on the trail or track this is the rim lock for you. Took a few rides and flat repairs on the trail to discover that these rim locks are JUNK. The hardware is cool but it stops there.