The difference between the IGNO and the Satchur8 are the Virtual Vintage slugs.
When I put a A8 into a Norton I wasn't too impressed of the sound. Maybe the double row hex screws make a remarkable difference?
I tried A8 magnets in a lot of pickups but at the end I had put them all out again. I liked the Alternative 8 in a Gibson SG Standard that I sold. Tried it in a SG Supreme but it didn't last long as it sounded nothing like in the Standard before.