I've gotten the PT1 SDU myself, but everyone here said you couldn't get one on PT2, so I assumed they were probably right., and I've never seen anyone claiming to have got one. --- When it comes to the past, we all stack the deck.
At about 8-10 minutes per run, it took me about an hour and a half, so I'd say 9-10 attempts before I got it. I've since tried nearly a dozen times with two separate characters on PT1, and between screwing up the jump-through-the-hole and having the containers spawn and force me to walk through that annoying part, I gave up and decided it's not worth the trouble. --- When it comes to the past, we all stack the deck.
I have yet to see anyone on these boards claim to have gotten one, google searches yielded nada, and the Borderlands wiki says there's only one. Whoever told you they had one was most likely a modder or full of ****. --- When it comes to the past, we all stack the deck.