@BetterRed - glad you got things figured out to something you are happy with. indeed now Count Pages will not have to do a (slow RTF) conversion in the background for every book - it just has to unzip the epub and parse the html within it hence the orders of magnitude speed difference.
And of course you can then be doing your editing of the ePub version of the book in the new shiny version of Sigil, rather than reconverting from RTF anyway...
