Digital BW, The Print

Has anyone tried the MIS Gloss Coat?

From their website:

"MIS Gloss Coat Sample - Gloss Coat is a clear odorless coating which can be
applied to a glossy archival pigmented print to eliminate dull spots and to
seal the surface to make the print more durable. Requires a second printer
to apply. Comes in a 2 oz sample bottle, virgin empty cartridge not
included. 

$5.00"

Sounds like a good idea but I wonder about clogs, and for that matter how
does one do a nozzle check???

Todd