i could probably pull out such a tool but it would be a waste since ill be using other portable utilities just to get this one thing done

it may resemble reg2inf translating *.reg but this will translate what is in REG QUERY output result ..
its possible to use REG EXPORT and then reg2inf to translate to inf format but reg2inf will make a whole inf file ...
for instance if reg2Qinf.exe was available a script maker could point to a key or a specific value under some key and translate it to inf format in >sdout style
( so it is easy to get inf formatted lines even for one value only; like version information )
this can surly be helpful in updating addons through scripts
instead of updating & re uploading the load of addons; most application updates are for base files so there cant be anything extraordinary with each release besides maybe some reg settings like file version stuff.)
a user can then install the latest app version & experiment the new release:: if he likes it he then uses the addon builder for that app with a script using regQ2inf with some file gather method to lastly have create the uptodated version of that addon ...