The Gemini is an manual interpoint unit that can also produces inkprint on a braille page with appropriate software. Manual interpoint means that you need to first print the "odd" pages in one run, and then reload the printer with these pages inserted upside down for a second pass with the "even" page.
The Gemini can do interpoint, and it can do interline (braille and print on the same page), but it cannot produce interpoint and interline on the same material.
Duxbury DBT supports virtually all commercially made embossers. If you have concerns about any embosser model, please e-mail firstname.lastname@example.org