From my experience, albeit with cars not bikes, I've always been provided a loaner for this sort of thing.
Also Saturn is well regarded as providing excellent customer care, and their autos are pretty affordable, it doesn't take a BMW to get some service.
I got a loaner RE because WS was taking my bike halfway across the country when it failed. I am fairly sure this happened because they had to make sure it wasn't a failure that was common throughout all the UCE's and would cost them a crap load if that's the case and went on unresolved. So, instead of having my bike fixed locally it gets shipped off and that adds alot of time on my end in getting it back. I think it's only fair I got some wheels in return.
Both Torre and GV have loaners for their customers, they happened to both be out, they may not be RE's, but at least it keeps people from missing work etc.
Where my big issues have been have been with poor communication. My brand new bike, barely ridden, was whisked off after a major failure, it is not asking much to be kept appraised of what exactly is going on.
If I had been going 70mph and the wheels suddenly locked and gears seized instead of going slowly in a parking lot, I think RE would have had much bigger problems to deal with.