There are some aspects of Padfone that we don't think it will be a market success:
1. You still need to carry the 10" screen, and it is not as portable as a 4+" phone
2. When the phone is inside tablet, you'll need a headset to receive and make calls
Anyway our product is not in compete with padfone, although we have something in common - to combine devices from different categories. The key difference, besides the size, is that we emphasize on PORTABILITY; while they probably emphasize on versatile performance.
Our device is small and light and easily slip into pocket, yet comes with a beautiful 7" screen.
BTW, I think the combination of device (our device + laptop/ultrabook) is more reasonable than (Padfone + laptop/ultrabook), because Padfone size is already very similar to laptop.