I confirm that Nanofibres + Toppik Spray Applicator together work wonders for me (buzz cut setting 1 on Remington Shortcut).
I even pried out the metal strip & crazy-glued onto my Toppik fiber container & I shake the container (with travel cap closed) for 15 sec prior to spraying. For reasons why I do these, please refer to my other post with keywords "electrostatic properties" in the title within this Concealer forum.
Due to the many better qualities of Nanofibres over Toppik fibers (as reported by many users here), the result from the Spray Applicator (w/ Nanofibres inside) is equally better as expected than with Toppik fibers inside. Like less clumping, more even landing, less fibers required, more natural look, zero skin irritation, etc...