Conversion makers just have to make sure to change the default cab to bin in the ultraarc.ini & save the file ( save the master image for the CIUV2 with it updated ) then no need to have to make the change anymore.
Unfortunately most of the conversions your catching up on, may NOT have been updated to use UltraARC, but that's just a simple ini edit, you can do yourself.
Other topic has ultraarc version >
http://www.fileforums.com/showthread.php?t=96124