That's cool! We're big fans, and Nexdock is great for Windows mobile phones. We are not compatible with Windows mobile phones at all.
The slot is interesting, but makes it hard to fit with every phone. One of the biggest challenges of Android is the fragmentation across devices, OSes, and experiences. We wanted to make this accessible to ALL Android devices, so that's why we opted for the side mount option instead.
By the way, the one thing I will say if you want to use your Android phone as a laptop is that there's a major difference in using USB vs. using casting. Aside from the latency issues of casting, you can only send video screens in casting -- and you have to buy the casting device. Android devices typically don't have a video out, so outside of using USB / DisplayLink, the experience is really poor.
The slot is interesting, but makes it hard to fit with every phone. One of the biggest challenges of Android is the fragmentation across devices, OSes, and experiences. We wanted to make this accessible to ALL Android devices, so that's why we opted for the side mount option instead.