I bought some cheap blinds to replace cheap blinds and wanted to cut them to fit. Previous blinds had been cut, unsuccessfully, with a regular pair of scissors. Looked on the internet where I saw that wallpaper or seamstress scissors, which are much longer, were best for cutting blinds. With these I was able to achieve a very straight cut. So much so that you cannot tell which side of the blind was pre-cut.
use in the office as i was fed up of losing scissors and when cutting paper the long blades help keeping a straight cut much cheaper than a guillotine so the handles are good quality too used to replace a cheaper set where one handle broke