I have been looking for a cheap hybrid device for a long time. I have already found several good ones, but they were always very expensive (600 euro-800 euro).
What do you mean exactly, since these are two operating systems that do not communicate with each other
The best thing to do is to buy a good Windows laptop with a touchscreen screen, and use it to install Android there. Already you have a Windows laptop and Android Talbet in one device.
So that you can switch back and forth and use the same memory