I am generally sceptical, when a manufacturer tries to sell technical shortcomings as an aid to creative use. Orthochromatic films may have their justified use cases, like e.g. allowing to develop the film by sight under a safelight, but they certainly do not 'give you more options for your creative photo ideas' as stated on the Silbera home page.
I also hope that the sample images they are presenting are taken with poor photographic equipment, scanned on poor scanners and post-processed by an incompetent operator. It would be rather inconvenient if all the obvious problems like aberration, grainyness and blocked shadows or highlights are caused by the film material.