Some guy at Penny Arcade took his group on a D&D "Trip to Yesteryear" and played a game of S&W/OD&D. I don't know anything about Penny Arcade, except that they have a convention, a comic---and a podcast that Wesley Crusher plays D&D on or something? Until today I don't think I've been on their site.
I figure any exposure to the older games and clones is mostly a good thing. What makes me wonder if about this particular case is this statement:
"A sort of OD&D roller-coaster with all the twists and turns of old school gaming but minus the freedom and danger."
How you expose your players to something like a S&W/OD&D/Old School game, and not give the players freedom or place them in danger? It's like the difference between actually storming the beaches at Normandy or watching it on TV.
I don't want to get into a definitional war of "what elements make a game old school," but running OD&D without freedom of danger is like shooting a porn where no one has sex.
It sounds like he had good intentions, but if his intention was to really show someone how it used to be, he should show them 100%.