@GOODESkier - here is my take on what the pros are using. It is interesting to keep a mental score of who is using what, wether at a pro tournament or local/regional gathering just to see what, if anything, is new and how they like it, why they made that choice if you get a chance to ask. However, it has little effect on steering my purchase decisions for couple of reasons...
a) If they are at sponsorship level with a ski company, they are going to be limited in what kind of bindings they put on that ski and represent the brand. In my world, I'm putting these bindings on an HO, so initally looked at some Apex wanting to make the move to hard boots of some kind for control gains. Not becasue I'm sponsored, (ha, not even someday) but just to keep the same brand, hole patterns, etc. I looked enough to not like the APEX design for several reasons, primary is the need to release without the liner (ala Stradas). Also, to your point, of all the HO skis you do see being used by big names, don't see many, if any APEX. I have not read their contract, but assume its NOT considered a conflict to put other bindings on that HO ski as long as the bindings are from a "binding company" that does not sell skis. The Stealth are Fogman based, but considered a Connelly product. The only chance you have seeing them on a big name pro-skier is a Team Connelly / Prophecy skier, no matter who on a HO/Radar/D3/Goode ski may secretly tell you they like the stealth design. Reflex, Fluid Motion, Fogman before the joint venture would be fair game, but not gonna see any pros putting Connelly boot system on another brand ski, unless they are doing it out of sight and considering changing skis also. I don't have this constraint unless ski companies start looking to sign middle-age wannbe athletes that ski 2X per week (in season) in the midwest. So, I put more stock in the folks opinions on this site who have used these things for 1+ seasons and what they have liked, not liked when making my list of pros/cons.
b) Most "pro-level" sponsored skiers, even while skiing at much shorter line lenghts than I will ever be, are so damn good at their craft that they are much less likely to make the mistakes that I will, sending myself out the front (or some variation). When there is a crash at 36 mph and 41 off, it can be a bad one for sure. But the pros you are probably observing are too smart about their skiing ability to get into trouble on those passes, save for rare exceptions of course. Plus their bodies (any pro athlete) are more resistent to injuries than mine. They take 32 off as a warmup and stroll thru the next 3 or 4 passes after that like a walk in the park. That ain't me, and especially trying out new skis the next few seasons I am MUCH more likely than any sponsored skier to do something stupid to cause one of those critical falls we all dread and therefore think the release system is #1 consideration followed by comfort and control in deciding factors.
Meant to explain my perspective there earlier, but then the topic surfaced again...