As a retiree with plenty of free time, I have reviewed and even contacted the Chinese supplier listed om Ebay. Other the some cheapo solutions that we all know through the years, in my case 69yo and still riding over 20k miles a year between 2 bikes, the only valid solutions I found are the following:
1. Specifically for the MY2015+, only SW-Motech and Hepco (H&B), at about $65 and $60 respectively. No discount. Both have a different versions for MY2014 and before.
2. GIVI has a model claimed to fit all years at about $48 including the typical 10% discount. It has a design with 4 plates... base plate, 2 shims, and a top plate.
3. Mastech has a design that fits up to MY2014. I saw no claims for MY2015+. Great 50% discounted price at about $18.
4. No suitable Chinese made items on Ebay

All above prices do not include shipping and taxes...
me, being the "cheapo" guy, bought the SW-Motech at full price but without taxes and shipping, at Twisted Throttled.

I hope this info can be useful for future buyers.
