I just had the procedure today, so I can't speak to the result yet. But the treatment was only mildly uncomfortable. I didn't mind the vacuum or the cool down phase much. Thawing was the worst part for me, but still not bad ... Maybe 2 or3/10.
And it was really rewarding to see how much area was treated -- how much was truly sucked into the machine. I'm looking forward to seeing how things look in the weeks and months to come!