Static Map Image (and/or watching for Geo changes)

I really love the Geo and Maps fields. There are a few places where showing the full interactive map is overkill, but we would still like to show the location on a map if the user selects/enters an address in the autocomplete field.

Any suggestions on how to watch for a user to select a new address from the autocomplete? Like what js events the MB Map is using? -- Basically I'm wanting to mimic the behavior of the MB Google Map field, but only show a static image map instead of the full interactive map.

I've tried watching for change events on the autocomplete address field and a number of other fields (like formatted_address etc) but change events don't seem to be recognized. And I've been reading through the Google Maps API docs, but getting a little lost. So far, I'm able to display a static image when a user is editing a post by using the previous address entry & a static map src such as:
https://maps.googleapis.com/maps/api/staticmap?center=ADDRESS&zoom=14&scale=1&size=400x400&maptype=hybrid&key=API_KEY&format=png&visual_refresh=true&markers=size:mid%7Ccolor:0xff0000%7Clabel:%7CADDRESS - But I'd like to refresh my image when the user selects a new address.