I have meanwhile tested the soft and medium, also some other guys from our club tested them. All in all usable. But there are two issues that are not performing on the highest level that I'm used to have from standard leather tips: We experienced that the grip is not on that level of a good leather tip, me and my guys from the club miscued much more than usual. Second thing is that the soft and medium absorb more of the stroke energy than used from good leather tips, we did much harder to thrill the cueball than we are used to.
The green (hard) RECOIL I did not test yet, and I'm not sure if shall test the hard one in future, because I expect still less grip and more risk of miscuing. And the medium was already on the upper level of what feels nice to me, the hard one would probably feel to hard to me.
All in all I think this innovation is great for barcues and their owners who will have a minimum effort in taking care of the tips. Or if someone plays a very heavy cue or plays spin and draw pretty much at the center of the cueball, the RECOIL could be a very good tip and very durable.