Yeah, the spiderbrace is a great deal. It adds no weight and gives you 2 grips plus a shoulder support. One grip is under the cam, which is a better placement than one to either side. You can use both grips or use one and the hand strap. Well balanced either way. And with care you can go back and forth without shaking the cam.
It was designed for the xl1 and the eyepiece is a little better placed with the xl1, but it works great with the xl2. It