Yes. Also, remember to read through the topic to collect any bug fixes like this one (http://rmrk.net/index.php/topic,34377.msg492950.html#msg492950)
EDIT::
The generic code to call it would be:
$scene = Scene_Catalogue.new (1)
That would call the "All Weapons" Catalogue. Since you are going to be making new catalogues, you would replace the 1 in that call with whatever ID you give the new catalogues.