Hi, I have this lock as well and in my case, it's connected to the Echo Plus 2nd generation. I'm surprised you can unlock your door with Alexa. I thought (as mentioned in the manual) that for security reason you can just lock and not unlock.
Regarding your question, I also only have temperature and not lock status in a routine but I know it's possible to get its status because when saying "Alexa, is the front door locked?" it will return the status of the lock.