Nanomote as presence senor

Would it be possible to use a nanomote as a presence sensors. It has to connect some what quicky to be a key fob for disarming. Would be nice to not have a presence sensor and fob if possible. Not just because of cost but bulk.

My nanomote arrives to day and already have rule machine setup to do all the arm/DISARM, door unlock and garage door control. Waiting for Amazon to deliver..

Doubtefull, zwave devices aren't very good at waking up, and if it could be configured to wake up every 30 seconds, I suspect the battery life would be measured in months, if not weeks...
Zigbee is much better at this sort of thing, hence all the presence fobs being zigbee.

Makes sense. Thanks