Glass Break Sensors

Can glass break sensors be daisy chained? I was looking at the Sentrol Shatterpro II series sensors.
The best way to put multiple glass breaks on a single zone is as follows:
1. Home run all cables (4/c) to the panel.
2. Parallel the power wires (Red & Black).
3. Series the contacts (White & Green).

The disadvantage to doing this is that if you get an alarm, you won't know which one tripped the zone (unless there is a pile of glass crumbs laying on the floor near it.)

The only advantage is that you use less zones. My preference would be to consider using a zone expander.