Hm... I'm Canadian. My kids, both the boy and the girl, were in first Beaver Scouts, then Cub Scouts. Scouting here is both co-ed and non-denominational. It wasn't, at least 15 years ago, non-religious, but it was trying to be open to all faiths.
I put my daughter in Scouts, rather than Guides, for the simple reason that it was easier to coordinate getting the kids to one meeting, versus two. Both our local Girl Guides and Scouts Canada seemed to have similarly outdoorsy type programs, and badges, though Girl Guides put a little more emphasis on self-actualization. If I'd had two girls, instead of a girl and a boy, I might have considered Guides.
The children had a good experience in Scouts. They built and raced little cars, went hiking and camping and rock climbing, played games and collected their badges. When we took the kids out to a sleepover at the football stadium, boys slept on one side of the conference room, and girls slept on the other, with several adult chaperones sleeping with them. Facilities were never an issue.
Personally, I very much support co-ed scouting. Unfortunately, what the US Scouting movement is putting in place does not seem to be co-ed scouting. And I'm not a big fan of the whole "separate-but-equal" thing that BSA seems to be aiming for. I can definitely see why GSUSA is upset, as it really does look like the BSA is trying to directly compete with them by offering very much the same thing.
If this is a step to full integration, that's all to the good. But, it's a wobbly first step, at best.
Funny story - one of the leaders were guiding the children through the oath, and took a moment to carefully explain that they could choose to swear it to God, "however your family defines the concept of deity, or whatever your religious practices are". Which went entirely over the heads of this group of 5 and 6 year olds, almost all of whom - including my son - stared at her blankly. But my daughter bounced right up, and announced loudly, "Then I'm swearing MY oath to Aphrodite, because she's the PRETTIEST!"