If I am reading your question right you have the same idea I had. Rather than buying/mounting a couple of cheap $100 tablets by your doors, just mount extra Almonds by the doors to use as access points for HA.
I asked this same question MONTHS ago. If you had 2 Almond+ or an Almond+ and an Almond 2015 on the same account if they could both control the devices on the same cloud account and NEVER got a reply other than 2015 is not a zigbee repeater which was not what I asked. So I would love to see if you actually get an answer.
You can already assign a PIN code to the touchscreen , so that is covered, just waiting to see if you can have more than one hub on the same account controlling the same devices. The lack of an answer tells me that the answer is probably "no" .