I purchased the Kajima Gators 2 years ago. A few thoughts:
1. While certainly easy to install and took very little time, I did find in addition having to use additional zip ties then what was included with the gators to keep the lock seams together, I used cement glue on the actual lock seams....otherwise over time they would begin to separate in the rear along the seams.
2. I will say so far the Kajima's do hold up well. They are constructed of thick rubber and do not feel flimsy in the slightest. No signs of visual wear. I've been riding with them for 7k miles so far. Also, there is no corrosion on the forks underneath. I do make it a habit of checking underneath during the winter months and use chrome polish to protect against any potential moisture build up that could damage the forks...
3. The bottom of the boots are about 1/4 inch longer compared to a traditional gator install. If I was to install again, I might re-consider trimming along the bottoms a bit. I initially elected not to as I was concerned they would appear cut and not look as close to an OEM install as possible.
4. When all is said and done, while I'm ok with the Kajima's, I plan at some point to install a set of the Kawi gators.