Which version are you talking about? Did Sondheim ever present anything? I thought that William Finn, when he took the project over, actually had a workshop of it, didn't he? but wasn't that many years ago?
I always thought, when hearing about this project, that the physical requirements would murder the show. You could always get boring but beautiful guys like Matt Cavanaugh, but the best, most talented, most charismatic musical theatre performers are rarely bodybuilders.