lazarus
Blue Crack Supplier
agreed it's not the only, but it's the major criteria -- there's little daylight between what happens on the album and what happens live. i would imagine they at least tried to make some of those songs work live, possibly out of the need for variety and pacing in a 2+ hour setlist. Fez probably not since it's so clearly an album interlude, but i can see them having attempted SLAB and COL. they tried OSC for i/e.
Why in god's name would they have even considered a live version of SLAB? It's all atmospherics and a particular sound. And unlike Velvet Dress (its closest cousin), it's not sexy and can't even be used in that "slow dance" way in a concert--it's the opposite of sexy, considering it's about a child molester.