Same here… but as a Corel Draw user I find Inkscape in general clunky. In Inkstitch it’s very awkward to have to select the language each time in the extension context menu. That should be set by Inscape’s language pref.
Ay my shop we use a Tajima, Brother and Juki AMS machines for embroidery work… since my partner is the one that handles the embroidery end I’m not sure what software other than we have a stand alone program as well as a Corel Draw plugin. For what it’s worth - my partner did comment that Inkstitch does have a few fill options only found on higher end software.