I sent a PM to Jim about this, since Allen's transfer is en route, but I guess Jim's a bit busy what with the recording session and all ...
Actually, there's another possibility for hearing this, though it would take a bit longer: Michael Cuscuna has told me that, if he figures out a way to do a Three Sounds Mosaic, and if there's space and the music is good, and if Gene's widow approves, he'd definitely like to include this as an earliest known recording. (And I ran it by Janie Harris and she's happy to give her consent, and she hasn't even heard it yet!)
God, I hope it's so. Trouble is, Michael has been saying for a long time that he's trying to figure out a way to do a Mosaic and my impression from several emails is that it's not a large possibility, that a Select or two or maybe just a single cd is the more likely scenario.