We have an iPad and an Asus TF300T with keyboard dock on Jelly Bean. We have an iMac, two desktop beasts for gaming or recording (both on Win 7 64) and now we have a cool Touchscreen PC on Win 8. Anyone familiar with mobile apps should have no problem with Win 8 (in terms of basic function).
Win is doing what other brands do by attempting to cross hardware platforms for tablet, laptop and smartphone (mobile) to Desktop with full integration. In the long term it just simplifies the process.
Apple has the right idea too but its just too proprietary imo..