Enjoy them. Have used in road, gravel, and mtb.
Road is a big struggle to get on for my rapide clx 2 wheels. They need to make longer valves because extenders suck. Have never needed the run flat.
I’d like to see a slightly bigger size for gravel, the gravel tires I have are bigger than the recommended size.
After inflating and deflating for about the recommended 1 year, the noodle can become stretched. I just cut it again and put them in the commuter wheels.
Mountain bike is there for a very different purpose. I do notice that silca sealant can form a stanimal globbed to to the insert.