Yeah, I'm still around.
After working out the transit times and getting a late start this morning, I've postponed my planned outing to later this week. The agenda outlined in my previous post turned out to involve a non-trivial chance of winding up stranded in Bethlehem overnight. So, back to the drawing board.
On the plus side, that means I was at my computer to see a wonderfully-titled article go by on the astro-ph archive: Evolution of a Network of Vortex Loops in HeII.
So naturally I popped it open and discovered that, when viewed in a serif font, that was HeII (in astrophysics that would refer to a singly ionized helium plasma, but in a condensed matter paper it means helium in its superfluid phase). Which makes a bit more sense. Although now, I'm a bit curious as to what Infernal vortex loops would consist of.