I’ve ordered the babyzen yoyo with newborn insert and currently looking at getting a lovely sheepskin insert to use with it. Question I have is can I use a liner with the newborn insert or just when used a pushchair? The reason I ask is that the newborn insert has a little head support on it and wondered if this would prevent me using one. I’ve found one that will specifically fit a yoyo but it only shows it when in pushchair mode.