When the HALO stuff came out, I was solidly in the camp with Firestorm Armada. Budgets being what they are, there wasn't room for another miniatures game in my lineup. Also, I'd never been a big fan of the HALO franchise (nothing wrong with it, just never got into it) so that wasn't a draw for me. Then, as SG started on their downward slide, it seemed prudent not to jump in. In speaking with the local FLGS owner, he noted that initial sales were good, but it was only going to collectors, as the game wasn't ever played in-store, despite their attempts to support it.
I think they still have some boxes sitting on the clearance shelf, even today.