I have no direct experience with Zigview, but did research them a few months ago. They looked very interesting but had mixed reviews, mostly around build quality. It was very hard for me to justify the expense. With the 1dm3, that search ended.
I'm glad you mentioned your needs, however, as I will recommend that you pursue an alternate approach from the vast array of home security devices that are available.
This store serves as one example. I'm sure you must have the quivalent - or even better, considering the security camera boomlet in the UK.