Fake Shot before Invisible a viable build?

Blank Shot sucks. You rarely need to stun monsters in 2nd job (or ever, for that matter - Ice Splitter replaces it in 3rd job and CGs are like, the only thing you'll ever need to Stun that's worth killing and doesn't die in one hit). Gunslingers do low damage, you need to milk the power you get from Invisible Shot for all it's worth. It's the only thing that lets slingers train at a pace that matches other classes in 2nd job.