Blinds for conservatory

hi all, Looking at getting blinds for our conservatory. Wondering if anyone has experience of a pleated blind, where you pull a cord to the left and it releases the blind the whole way down and then you ratchet it up as high as you want.

The advantages over the cord running down either side is that little fingers don't get to pull the cord as it is way out of their reach and we can get wider widths compared to the cord running down either side, meaning we can cover a full window and not having to split the windows in two pleated blinds.

We don't want to install something that is troublesome !!! Our query is, are they troublesome or has anyone got them installed?
Thanks for any comments and experiences given.