This discussion has nicely illuminated the uncertainties and user-unfriendly aspects of allowing printers to manage colors. Why choose this option? I see in the PrintFab manual the recommendation is to allow applications to manage colors. PS and PE are named as photo editing examples and the general message is clear. That would be my recommendation for PL as well.
The current PL print module is anemic, but it does work as advertised. If you choose to print directly from PL, allow PL to manage colors. Assuming you are starting with a RAW file, I would take the extra step of exporting (to the original image folder) a full-size 16 bit TIFF with an embedded actual ICC color profile. Send the exported TIFF to the printer. This extra step will reduce or eliminate any color mismatches or ambiguities that may exist in the file metadata. After printing, you can always delete the TIFF if storage is an issue.