Mathy Vanhoef, the researcher who discovered the KRACK vulnerability and therefore the most authoritative source available on this subject, removed any ambiguity in a video interview for Tech News Weekly:
As a home user, if you've done update on your Windows, and your IOS devices, in that case I would say you're secure.
When you connect to a more enterprise or a more business network, for example a University or a company that has a lot of access points, so a lot of places were the wireless technology is being broadcasted, then there could still be a perk in the equipment that they use.
But, for your home network, if you just update your Windows, or your laptops and your smartphones, then you're already safe.
Moreover, he later added:
Most KRACK attacks against vulnerable clients can be prevented by modifying the router/access point. This may even be possible through AP configuration changes only (without updates). Example is Cisco workarounds. Though this may affect the reliability of handshakes in certain edge cases (e.g. with slow clients or unreliable connections).