I have. The Grimorium Verum is my go-to grimoire, and has been since the 1990's. I have put it to to good and very dramatic effect, and my understanding of the daimons , as well as myself, have evolved considerably since then.
Just to be clear, I primarily work in a Folk Catholic mythic framework that is a little more Solomonic than what Jake is doing, but going back to a what Geotia's Greek pagan roots as a sort of 'paleo-Geotia' is a viable approach. That said, the spirits will not recognize nor respond to any and all pagan god names, but they do to the names and structure Jake proposes.
It might even but helpful to see them less as slavering demons from Hell, but as something a little closer to pagan divinities. But turning them (back?) into pagan gods like the Demonaltors like to do is also not necessarary.
To make more sense of it I recommend the rest of JSK's entire 'Encyclopaedia Goetica' series, as well as the chap handbooks from Haden Press, mixed a little with a Lisiewski's "subjective synthesis" as being helfpul. As Verum says the demons will come "according to the character and temperament of the one who wishes to invoke."
And.
"The spirits, who are powerful and exalted, serve only their confidants and intimate friends..."
And.
"The spirits do not always appear in the same form. This is because they meld themselves out of the secret matter, from all matter and for this reason, they need something to lend them a body in order to appear to us, and can take the shape and form that appeal to them.
Beware lest they frighten you."
AndI;ve noticed they sure do like to terrify people whos still have Fundemanetalist Christian lurking in their own subconcious, as many magicans and neopagans still do. That said a little caution is warrented.