Hang out around Ginnie on Wednesday night and listen to the GUE peeps for the last few years. C'mon man, it's no secret they've been against sidemount forever. I'm willing to give them the benefit of the doubt that they are finally moving to SM because they see the value and admit that SM fulfills a need. It's either that, or they've realized a market that produces great revenue and with their dying numbers year after year, they're trying to survive financially by any means necessary.
Its really one or the other (or both). I choose to think it's the first reason.
But please don't try to convince the masses that GUE was okay with sidemount all this time. That's a hopeless endeavor. And yes, they even said exactly, "sidemount is going to kill people." Many of us have heard it countless times.
Kudos to them (gue) for finally getting their heads out of the sand regardless of the reason for the change.