I hope Sony (or some user) indeed releases drivers for Windows. I really don't dig X360 gamepads (and I don't appreciate X1 controller either based on the imagens I've seen so far). Never got used to d-pad, triggers orientation compared with L2/R2 shoulder buttons and thumbsticks placement, they feel very weird compared with Dual Shock line of controllers. I prefer DirectInput to Xinput as well. The DS4 controller looks very comfortable, if my current Thrustmaster controller dies any soon, I'll certainly look for a DS4 controller to replace it.
The issue is that most game developers nowadays are lazy and don't implement DirectInput support , only Xinput, which will create a lot of hassle for users, such as having to use XBCE app to emulate Xinput.