i thought about this too, but wanted to be able to easily switch between this and my roadbike to test out my recovery status, without recabling.
It just seems, oh, ridiculously wasteful. So you only have one road bike?
Do you have a commuter? Use that since apparently you're too injured to commute on it.
Why not just buy a cheap commuter-worthy bike. Re-cable it for the setup. Train. Test out your whatever on your regular bike.
When you're done, re-cable the cheap commuter worthy bike and voila! You have something that you will actually use.