So obviously Alexa can be enabled on Roam, this question is whether the Roam can be one of the "Alexa-Enabled Devices" in a group and not just a "Device".
The difference being I can tell an Alexa-Enabled device to "turn on the lights" and the lights in the specific group associated with that Alexa-Enabled Device turn on. With the Roam, you need to specify the group as it only appears as a Device.
For info, when editing a group, both the Beam and One appear under "Alexa-Enabled Devices" whereas Roam appears under "Devices".