Welcome from WA. I am also a prior ST rider (1100 as well as 1300). It took me a few weeks to feel at home on the FJR. Initially the FJR made me feel on top of a motorcycle rather than being an integral part of it - tough to explain but just more disconnected on the FJR. Also, although my FJR (2016) runs at lower RPMs than my ST 1300, I constantly looked for another gear, as it felt like 6,000 RPM when it was just 3,000. Must be the in-line vs. V configuration.
Anyway, those initial struggles are long gone, and I absolutely love my FJR now. I don't get the same weather protection as the ST, but it's actually more comfortable on the longer rides. And it's in a different league when it comes to having fun! Enjoy!