Yeah, you’re right. If you absolutely need the latest NVidia drivers, you kind of have to choose between the devil and the deep blue sea. You can pull it from some random place on the internet, or use whatever script NVidia provides you with and do it under your own responsibility… Or use experimental, but it may be not be tested or be incompatible with your kernel version. Neither option is recommended. I’ve had some success with experimental. Debian have high standards and at least it’s packaged and tied into the distribution at all. But there is no guarantee. (I’m not sure if you can mix that with the stable version of Debian, though. I use Debian Testing…) (Their Backports are a better option for Debian Stable.)

Maybe somebody else has an idea, I don’t know any better way to do it. The proper way is to wait until it’s tested and becomes available in Debian.

I don’t know when that’s going to happen. It usually takes quite some time with Debian. Probably some more months. You can have a look at the Package tracker