Since Sanderson has been weirdly indirect in answers to whether or not Hoid used/consumed the lerasium - not simply saying yes but instead being roundabout and saying things like - well you've seen him use allomancy! (In addition to the original comments if it being his 'original intent' or something like that...)
I propose a slightly different question (or two):
Is Hoid's allomantic ability on par with that of Elend (post lerasium, of course)?
Is there at least a portion of the lerasium bead Hoid took that still exists?
That line of questioning also led me to wonder,
Since allomancy is an aspect of Preservation and theoretically allows basic communication by Harmony,
How aware of Hoid's location/actions is Harmony?