Thanks, but NO thanks.
I reserve the right to receive calls on ONLY one cellphone. And most certainly won't like it if every single gadget decide to give me a tinkle in order to let me know that person X want to talk to me.
Chances are it'll be either a cold caller, telemarketer or spammer.
One device is easy to manage - just put it on silent and ignore its frantic buzzing. A whole host of beeping and whirring devices? Not so simple...