Good to know from a market perspective, Andrew. I'm completely unqualified to comment from that perspective, of course, but my thoughts at the moment are the following-
There appear to be two issues there- the one is the "in wall" "Permanent" mounting and the other (to me at least) is the dedicated device aspect. What I'm getting at is this:
Dedicated device: It's cool to be able to control your system from your android / iphone but my problem with that is twofold- firstly, I use my phone for other stuff so generally it hasn't got the orbiter front and centre when I need it. And when I need it I need it now. Like I need to mute the music, change the song or see the security camera NOW. So to me it is getting to the point where I need one or two devices that are predominantly orbiters. You go to them or pick them up, touch the screen to perhaps turn the screen on and it's ready to go. A mate made this point when I was trying to tell him he needed a camera at his gate and how cool it was he could see it on any browser. But he responds he doesn't want to have to turn on the TV, change the source, open a browser, go to a bookmark etc. That's where I started thinking you need the dedicated device.... and therefore you don't need all the extra nonsense that comes with these devices, really just the touch-screen and ability to run some type of orbiter. So they should be pretty cheap and easy.
iPadmini/Android tablet, of course, are fine for that purpose I would imagine but probably overspec'd and certainly overpriced for what is required... especially if you want a couple lying around.
In the wall: From what you're saying it sounds as if there is less demand for this now, perhaps I'm still caught in the 90s or something and I still think it's pretty cool ;-) I quite like the idea of "on the wall" where there is a dedicated bracket with all the wiring for charging, possibly network etc and the device can do both- be lifted off its mount to be carried around as an orbiter or whatever but also put back to serve the purpose of a control-system where you expect it to be. To me there is great value in knowing where the control device is when you need it urgently.
Just some thoughts. Thanks again for the market perspective... always useful and something most of us might not be aware of with our individual needs.