I'm in two minds about how well this will take off. Part of me says it's a great idea, but if it was available now, I would be asking myself if I actually need any of it.
I ditched my landline a couple of years ago, and one of the big advantages to it is that I only have one number now so people don't need to work out if I'm home or not before calling. If there was some way that a NIMble Desk Phone could detect when you are around and the calls are diverted to that, then I guess that would solve that one. But it seems a bit overkill for being too lazy to take the mobile out of my pocket.
STM