TurboPrint & PrintFab

I'm evaluating TurboPrint and really like the output. I have no problems printing from Gimp (using Gimp or turboprint print box), it works flawlessly and it's borderless.
In Darktable, however, I cannot get borderless prints (border marks are also showing this), something that opensource driver supports (of course, let's not start about colors and dpi). Is there a way I can make it print borderless in Darktable? It would greatly improve my workflow (instead of exporting from darktable, opening in Gimp,...).

Hello,

as borderless printing works with Gimp via TurboPrint on your printer, this should also be possible with darktable. However, we are no Darktable experts and do not have an idea why that should not work. I assume that somebody in a darktable forum hopefully has an answer why darktable does not offer this print mode (the print dialog is application specific) in your case.