I purchased the 2012 Salomon Tracker as my first AT binding. I wanted a binding with low stack height (comparable to the Marker line), that was burly, and could be skied inbounds. Alpine Binding: I got exactly that. The Tracker in no way or form is meant to be a 10k touring binding. It is heavy, it is strong, and it inspires confidence. I can bomb around on these like I would my 20 din race bindings. It feels exactly like an alpine binding would.
Touring Binding: It is heavy. There is no question to it. I know what I have strapped to my feet when I am skinning up a hill. To get into touring mode is quite easy. A simple push back on the end of the heel lifts the heel up and it is free for the metal on metal hook connection. There is no need to remove the ski to enter or exit touring mode* if one is skilled enough to remove skins that way. It has two levels for the heel riser, low, and high. It does not have a completely flat level due to its design. However, on the EC, very few areas require long flat tours in so this is a minimal issue for me.
Pivot Screws: I have had issues with my pivot screws in the front coming undone as I ski, not tour. When I tour, I make sure I screw them in before I leave. I have not heard of anyone else having this problem.
Heel Riser: Anyone with long flat approaches will want to look elsewhere. The lack of a flat touring mode will make these approaches brutal.
*IMPORTANT NOTE*: Like most frame AT bindings, under the toe piece ice and snow can gather. CLEAR THIS OUT EVERYTIME YOU WANT TO REATTACH THE BINDING TO THE SKI. Do not try to stomp it out, or the binding will break. I personally remove my skis to take off skins, and hand push the bindings back to the plate. If I encounter resistance, I stop and check to make sure all snow and ice is gone.