We managed to get about 8 minutes through one of those discs at my local club...ADV send the club a promo disc every month with usually 2-3 full episode 1s and a bunch of trailers. All of the episodes have a "FOR PROMOTIONAL PURPOSES ONLY" type watermark over the entire thing, and in our case, the disc crashed during playback.
FWIW, Geneon, CPM, Bandai and FUNimation also have club programs, except that they send you real DVDs (usually volume 1's or standalone films) and the club can choose what they get.