Hi I realise this is an old thread but if it's yet to be resolved hopefully I can help as I'm looking into doing something similar with my texecom premier elite alarm and am an alarm engineer by trade (although have yet to touch any z wave equipment)
Assuming you have a premier elite panel and not a premier or veritas system, texecom are supposedly bringing out there own hub which i believe will use z wave and definitely incorporates light switches etc. That said they are notorious for not bringing products out on time (we have been waiting for about 2-3 years for a wireless keypad which has nearly been ready for so long and yet still isn't out...)
So if you don't want to wait unknown years for them or if you don't have an elite panel, I'm thinking about using a fibaro universal binary sensor to wire into a spare output (or just standard bell output if you want to detect alarm activating) and have it trigger an IFTTT in your z wave controller.
I'm planning on having it switch my hall light on upon entry timer starting at night...
Like I said this is as yet untested but what I was planning...
Link to the binary sensor
https://www.amazon.co.uk/gp/aw/d/B00...=IJQISF7VE1JLS
Sam