That is a good thought, especially for those of us with two Valkyries. There is one caveat. Honda (and Valkyrie) keys use two different offsets. For this to work both keys (locks) must have the same offset. If one key will go into both locks this will work.
Correct. I got a vented (with check valve) gas cap made for Magnas IIRC but looks identical to our Valks. Need the venting with my modified belly tank install. Thought I would be clever with the key cut. NOT. It has the opposite offset so still have to carry two keys on the Jade keychain. So now I have what, five keychains; grab the appropriate one for what I'm doing today. Don't care to pick thru 30 keys or so with every use, never mind all that weight hanging off of locks.
On Jade I used a small colored wire tie to indicate fuel vs. ignition/fork/seat key.
BTW some outfits got cheap on the key locks. e.g. Kubota has no side cuts on their key blanks. Took the tractor to the dealer to install the rear grader blade. I said, "Here, you'll need my key."
"No we don't, we have a master that keys to all the locks."
Great. And there's no title to the easily stolen vehicle needed either - if you get your hands on one, you never register/license it - "possession is 9/10ths of the law".
Guess I better put the key in the safe when out of town, and chain the tractor to something it can't pull out - but it has tons of torque. And keep it out of sight from the road. I have a neighbor who parks his Kubota on his front lawn, on a high-traffic corner, as if on display. "Look at my cool toys." Wonder how long he'll keep it. Mine's out of sight, with a tarp bungied over it.