No rush, I have no issues postworking fog and such as needed.  Just slowly been reading my way through stuff as thoughts occur to me.  Since volumetric fog and such are not really core functionality I figure they will come a ways down the list.  Just a wish listy thing if it can be done.

Now, a quick question.  I found a free HDRI pano of a church with the stained glass and all, any ideas on if it would be possible to get the light to look like it was coming through the windows?  Since there are no window objects to drop a portal in front of it is leaving me scratching my head.  It was sort of what sparked my looking for the volumetric stuff too.