Smart home monitor exit/enter delay

There are a variety of ways to arm/disarm the system using physical devices. You can use a button, switch, minimote, etc and the Switch Activates Home Phrase Smart App. You can even use the Iris keypad.

Or is the issue SmartThings doesn’t want you using non-ST devices, so they are waiting to roll out entry/exit delays until they have an official Keypad to sell?