Thanks for this, Barry. How the heck did you stumble across this?
Anyway, I like this a lot. Call me a weirdo, but I've been preferring A/S order the past year or so. For the first few years of my Mahler studying I preferred S/A and shunned the idea of the order reversed, but after giving in and listening to both ways A/S started to sound more structurally balanced to me. I see both sides though, and of course they both work. I see the value in immediately following the first movement with the scherzo, like continuing the major/minor triad motif.
The beginning of the finale sounds creepy and dark as it should. What do you think of that tuba playing?
The hammers sound appropriate, but nothing game-changing. I do really prefer the second one reinforced with cymbals and tams, and it's super powerful here.