I've been using a tank bag on my 1090 ADVR continuously this season. I find it super convenient and can carry all kinds of crap that I either need, might need or just bought. It's a KTM branded bag for my old SMT990 that I cut/modified the mounting pad so it would fit on my previous 690, and it now fits perfectly on my 1090. I also like that I can snap the map pocket on top as I still like a paper map.
On most of my previous bikes I had side cases, but I found they would get in the way sometimes trying to navigate some places. Admittedly they were probably places that I shouldn't have tried to go, but what the hell.
I also ride frequently in hiking boots that cover my ankle and provide excellent support for my duck-flat feet and orthotics. For me they are a reasonable compromise recognizing the potential for injury in some types of crash.
I can also attest that (my) hiking boots are "water proof" when you step in a puddle but are NOT water proof when riding in the rain.