Been running CC in almost all my bikes for a 5 months now and I have a few observations
1) they aren't hard to install. At first I thought they were but I was doing it in December in a cold shed with no heat and the inserts had been sitting in my cold car all day. If the inserts are room temperature, they are pretty easy to put in. I can take off and put on tires with cc in about 5 extra minutes with no tools. If you are good at putting on tires without tools (including road tires) these are a snap in comparison. If you can't put on a tire without a lever, the inserts will end you! - learn the principles of intalling tires without tools and adding cushcore is not too tough a challenge - just make sure they aren't cold!
2) sealing tires is a bit harder as i find the sealant doesn't have easy access to the rim/tire interface once the tire has spun. Anyone have any hints? I have now started putting 20cc in, seating the tire, then putting in 20cc more and repeating the process.
3) You can run them ridiculously low pressure. I had a slow leak in one of my rear tires (see observation 2) and the pressure when I got back to my car was about 12 PSI. Despite having only 12PSI I managed to put in a top 4 strava performance on a super fast jumpy segment near the end of my ride with speeds up to 35km/h. I could tell things were squirmy but it didn't seem to slow me down any.
4) Just put these things in my rigid single speed that I dusted off recently. The lack of any suspension really showed me what the inserts were doing for me. It's incredible. Where I was previously bouncing my way through rough corners I can now lean the bike and carve at full speed like I would on any of my suspended bikes.
I know this sounds like an add for the product, but I wasn't even looking at these things until my friend explained the suspension advantages. This is my attempt to return the favour to someone like me who didn't know they were missing out the single best upgrade $250 can buy your bike.