I know for a fact that there has been a few cases in the past were some Triumph dealers have had demos rides end in tragedy, Andy. And so, as I wondered above about "liability claims", I have a feelin' that that has contributed to the almost demise of the demo practice among them.
Yep, it could be that, and the idea that keeping a line of demo bikes available at and by the dealers isn't a cost effective proposition for them, either.
(...though yeah, I agree with ya...not only is it inconvenient for the consumer, but it's come to be like that old saying of "buying a pig in a poke" too, huh!)