I have a 3yo and a 1yo and I too use the XT1 + 16-55 as my go to lens. I have the peak design slide and wear it as a sling with the camera positioned in my back.
It's a great strap, secure and fast to access, you can get it nice and tight, it does however tend to loosen itself over time ( say an hour or two of waking ever so slightly).
I'm not worried about damaging the camera as I'm careful and hold the kids on the opposite hip to the camera.
If I do need something more secure I go for the capture clip which is awesome but does take longer to get to the camera vs sliding the strap around.
The slide is a thick and bulky strap but it's great to wear all day. The bottom mount blocks the battery slot which is not a deal breaker for me but I am considering getting a grip do I don't have to keep removing the mount.
Highly recommended, much prefer having two mounting points vs the single black rapid one.
One other thing to note is that you may need to remove the bushes from the eyelets if you want to mount the anchors directly to the eyelets.
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