I've never seen that knot. I like to use 8lb nanofil main line, and finding a knot where it doesn't cut through fluoro thinner than 10lb has been hard. The FG with 40 wraps will work, but it's hard to tie correctly. I typically have to resort to a double-uni. But that Shin knot, after a few tries to learn how to tie it, it actually held. In fact, the first few tries to cinch it down it broke. I thought "yep, just what I thought would happen" but it wasn't the fluoro breaking. That's impressive.
As for the FG, the only way I've been able to consistently tie it, is with the Brent Ehrler method.