I the last two weeks I've installed Windows 7 on three separate systems; used the convenience rollup update to begin the update process. To date, no Windows 10 nags.
GWX is completely gone for quite a few months now, the pushing/nagging stopped last july to be exact.
@LM3 You post almost makes it sound like you are still getting the nag screens. If you are install the latest IE, the update the pulls the nag (and other security) updates are tied to it. Then downgrade IE or remove it in the Programs control panel.
I never installed IE11 on any of my Windows 7 installations and I still got the nags on all of them. The only way I could stop them was with a third party software package, last one I used was never10.