Moblique 2-in-1 penholders made by Luis Creations are versatile and can be use as an oblique or straight holder and work with all types of nib.. They also have a compartment inside to store your nibs. Available in a matt or shiny finish, and the price varies depending on the finish.
Watch this video from Luis Creations to see how to use them:
https://www.youtube.com/watch?v=lmPGWNWCY-U