You'll be fine wrapping a 90mm brake around a 92mm ski. It shouldn't hit the edge, if that's what you're wondering.
Originally Posted by XLTL
Are some bindings safer for skiing switch? I mean, most bindings "assume" you are skiing toes forward?
Not neccesarily, that comment was more in reference to your brakes being too wide for the ski. If your brakes hang too far past the edges they are much more prone to catch the snow when skiing switch, especially when landing or carving.
Originally Posted by riskyer
The Griffon bindings and Squire bindings are well used for park. So I would assume they are fine with switch riding... I also have an old pair of Marker Squires and I had no problem landing switch or riding switch.
Marker markets both the Squire and Griffon as park bindings, but really the Squire is only appropriate for kids. You're about my size, and frankly I would be terrified to ski on a Squire anywhere, let alone ski park. The Pivot is a great binding, but you're right it's a little more expensive. It's popular as a park binding for its durability and performance, but if you're not going TOO crazy you'll be totally fine on a Griffon. Tyrolia Attack 13 would be another to consider. It's similar to the Griffon, but with a slightly different heel piece concept.
Hope that helps!