With arthritis causing problems in my left thumb, I can see the need for a DCT trani in the future.

I actually have a DCT motorcycle in my garage: a 2013 Honda NC700XD. It's a adventure bike styled street bike that comes in either standard trani or DCT. My wife has a bum ankle, so this was the perfect bike for her.
I've ridden it numerous times and the DCT system works great. It defaults to full auto mode on startup and you can easily switch to Sport mode (my first step after starting) or manual mode. In manual mode, it won't shift for you except for taking it back to 1st after stopping. I love the ease of maintenance, including valve adjustments that will make any FJR owner envious. There have been zero maintenance issues on this bike.
The main downfalls to the DCT are the grab for the air clutch for those of us used to traditional transmissions and the annoying automatic upshifting when going downhill in corners that ruins your engine braking. You can paddle downshift and it will hold the gear but as soon as you throttle it will upshift again if it deems it necessary. Riding in manual is an option, but be warned that the red line is super low on the bike so I end up slamming into the rev limiter all the time because I'm expecting the FJR rush as the rpm's build. I do love not having a clutch lever on those rare days I'm riding it to work in traffic. I suspect the FJR DCT version would be setup better for us enthusiasts.