Very much so. If you do not complete the setup in the Amazon app, but get partway through, the Dash will connect to your network but does not trigger an order.
Once it shows up on your network, your Almond 2015 or Almond+ can detect it as a presence sensor (just a setting in the device's info). From there it can be used in your Rules. When it is joined, do something. When it is not joined, do something.
Quick (and only slightly useful to me at least) example:
1) Set Dash button to be a presence sensor with a timeout of 30min.
2) Create a rule that turns on a light when the Dash is joined (and the light is already of).
3) Create a second rule that turns off the light if the Dash is not on the network.
You now have a button that gives you light for ~30min.
Or use 2 buttons as on/off (but be careful not to have both trying to be joined at the same time, at present, because of the way rules work they would both be trying to work, so turning that light on and off repeatedly).
Cheap and easy.