I am currently using FHEM, but I recently got an amazon echo dot and a google home.
I would love to integrate them into my HA-system, so if openhab 2 supports google home (if possible without IFTTT as an intermediary) that would be a reason to change to openhab for me.
Sorry if this question is already answered somewhere, I could not find it, but as I do not use openhab yet I might be looking in the wrong places.
There are people who have successfully integrated with Echo.
Google Home has a public API so I imagine it will not be long before there is a binding. But given it has only been out for a month or so there is nothing available yet.