Never ever seen one of those before - I just have to pin Evie down with my left arm while I change her on my knee - I need about 4 arms to get her changed at the minute, a straight jacket might be a good idea
But, in reply to the original post, I gave up on 2 parters when Evie was about 6 months old as she got so wriggly it was a battle to get them on her (we were using prefolds so even trickier). I rarely use 2 parters now as find the pockets great, but a pull up might be even better.
Sadie xx