After trying out two other sets of tires, I decided to go with these for my 3,842-mile cross country trip (plus another 700-800 training miles pre-trip). These tires were put through every imaginable condition - glass, gravel, potholes, interstate shoulders filled with tire blowouts, downpours, wet descents on fresh asphalt. Zero flats, great grip in slippery conditions. They also hold air better than any tubeless tire I've used, losing maybe 5 psi overnight.
I have not tried taking them off the rims, but they were not difficult to mount with an air compressor (on Roval Terra CLX wheels).
I run the Pirelli with a 700 x 28 on my front wheel. This is my first time using this tire but I am happy with it. I have it on my road bike, carbon wheels, and run it tubeless. I have about 1500 miles on it so far and I think the grip is really good and no flats or issues. I feel it must have good flat protection because I ride over the occasional crud on the road and no flats. I pump it up to about 85 and add air about once every 3 rides but it doesn't need much air, it holds it's air pretty good - better than my bontrager R3's. I would buy this tire again.
While this is labeled a 'race' tire, it works well for every day training as long as you stick to the road. I've hit rocks on gravel trails and ended up needing a dynaplug to seal the sidewall hole. I'm getting over 3000 km per tire on these and they have fairly low rolling resistance, good puncture protection (for the tread more than the sidewall), and most importantly feel very secure in both the dry and wet at speed on curves.
I have 5-600 miles on the tires with no issues. They roll fast and I have been using them on my Ti gravel bike riding on group rides. No problems staying with the faster groups and they handle the rough roads out here great. Been running about 60 psi in the tires and they still roll fast.
They were relatively easy to install on my set of Zipp 303 Firecrest wheels. (My previous experience with road tubeless were with Schwalbe Pro Ones and Conti 5000 which were significantly more difficult to install.) The tires are expensive but so far I am impressed.