Yes love them!!
Yy to Different colour for different people. Easy to split peoples clothing across all the available space either to fit more in or in case one suit case goes missing.
Easier to unpack and pack. Literally sling each packing cube at the relevant child (even the one with SN) and they put it in the drawer. Hang a wash bag up. Clothes are either in the packing cube on the child or in the wash bag so much easier to repack end of holiday. At home you sling packing cubes with unused clothing in drawers
Roll not fold. Fit far more in with a packing cube than without.
Better for privacy/ease if for any reason you have to go through/empty and repack bags en route. Everything doesnt fall out everywhere. Also DD on camps. She was on one where she was the only girl and limited privacy, she found she had much more privacy with the packing cubes than she would have done otherwise.
Ive also been known to use them in day backpacks for hats, gloves, scarves, pack a macs, towels and swimwear, electronics....
Fab things