Tittle says it all, I have a few slides from my older GG bikes, Just not in front of me, Do the slides intergchange from the screw top to the bolt on top
The notch isn't even a ASI vs ASII as far as I'm aware. Its just an option thats available with the slides. You can buy notched or not, and like always some of us have some and others have others.
I think the notch is meant to help with sustaining a good idle, and I'm also 99% sure the ASII I got has a #7 non notched slide.