Default Questions about S pen with eraser

Hello, I have some questions about this device.

- Can I use the eraser of this device together with the Bamboo Stylus Feel? i.e. The former for erasing while the latter for writing and drawing.
- Under the new Samsung virtual keyboard for the PRO 12.2, we can opt for handwriting recognition. While using this device to write, can I also use the eraser?
- On the PRO 12.2, is there an offset issue? Do we have to make adjustment or it works fine right out of the box?
- Has anybody seen a white version?

Thanks.