Okay, I contacted Ms. Himmel to get some clarification on the Portametus and the Lantern. There is an aspect of her response that I find really interesting and eye-opening.
Original Message -
"There seems to be some confusion among the Collective regarding the different items that were discussed during the conference on Wednesday. We understand the Device is missing, presumably in the possession of the Spirit Seekers however, the Lantern and Portametus have become a bit cloudy. Is the Portametus the image that the Collective put together or is the Lantern itself the Portametus, with the image being a, "key," of sorts, to the gateway/portal.
I would just like to clear this up so the Collective can refocus with a more direct, and clear, understanding of what has happened."
Reply -
"Jeffrey, yes there does some to be some unnecessary confusion. We've instructed Mr. Gordon to post a summary to clear this up. As of now, the Portametus is clearly an instrument of metamorphasis. Beyond that, I must defer to the C.I.L. for analysis.
IH"
Emphasis mine.