As you are in NI, HKC would be my first choice (that said HKC would be my first choice anyway) I am also a big fan of HA, though I am a bit different from James. I have experimented with using Alexa for arming disarming, I have also used outputs on the alarm to trigger routines, such as courtesy lights on entry exit, or switch off all lights when set. An alarm panel is basically an input output module you are limited as to what you can make the inputs do, send alarm notifications, trigger outputs. The outputs on the panel are also limited especially when disarmed, but there are a few things you can do, access control, switch on lights, the app even has time schedules that can be set and overridden via the app.
In reality it is possible to make it do whatever you want, but not everyone has the patients or the time to work out how to make it do what you want it to do. Thats the reason my teleporting system hasnt ever got finished, well that and Heisenberg's uncertainty principle LOL.
HKC is also Hybrid and so you can use wireless and hard wired, the devices are two way wireless and quite secure. I would recommend hardwired devices everytime over wireless as you dont have the additional cost of batteries but having a back-up of
wireless is really handy especially if you want to add window contacts somewhere, or you have a outbuilding that you want to include.
It doesnt work with ITTT but you can interface inputs with outputs that do
Your problem will be finding a company willing to work with you on it, many co's are uncomfortable stepping out of the traditional burglar alarm stuff, but with good reason.