I've had a chance to use the new ICE pads and find them to be a viable option. In short, I like them for what they are.
With the limited selection of grits, these pads are obviously not meant for the heavy work of a complete resurfacing of a ball. You will still need 360, 500 and 1000 grit pads or sandpaper for that kind of work. In my opinion, these are more for the final finish of the ball and they do that well.
The pads are similar to an abranet screen with a 1/8th foam backing(if abranet screens had a backing). At similar grits, they seem to sand more aggressively than NEAT pads, but leave a better looking finish than Abralon pads.
As for longevity, I have only used them on two balls far so that remains to be seen.
I think the NEAT pads were a pretty big change from Abralon/Siaair pads as a finishing step. The ICE pads are not as big a change, but an improvement none-the-less.
Do you need these if you have NEAT/Abralon/Siaair/Sandpaper/Trizact/Scotch Brites etc that you are happy with? Nope.
Do you need these if you are a bowling geek like me who likes to try new things, "just to see how it works"? Most definitely.