The pic(s) you're talking about, Rob, were all conceptual designs. There's no real photos of a full dress Rocket tourer that I've seen, but rumor is there's one in design stage. I wouldn't be surprised if Triumph announced a new model this year or next.
Hugues, I haven't seen anything like you're wanting on the market yet, if ever. You'd have to do a bit of custom fab work to rig something like that. Personally, not worth the efforts and it'd sure mess up a nice looking hot rod. I say wait for the true full dress Rocket if that's your thing.