Interesting that the 367 works on your ES. I sent a note to Givi USA asking about compatibility with the 2014 ES and this was their response (received this morning).
"Thank you for contacting Givi USA. We appreciate the interest you have shown in our products. If the ES model is different from the regular model, then we do not offer any products for this model.
Best regards,
Givi USA"
Their web site shows a different part number for the 2014 bike (PL2119 side frames) than the PLR 367. According to the website, the PL and PLR367 are for the 2013 and earlier. They also show a PL2101 for the Outback side frames (2013 and earlier).
Has anyone mounted the 2101 side frames on a 2014 ES model? I prefer that style of case; if I can't get the Givi, I'll have to investigate one of the other options (SW Motech and some other case).