I have these two AOW models and they are awesome... But I think that they are too small to be Kroxigors... They can replace very well Scar Vet or Oldblood in saurus warrior units... Doctor
As requested, size comparison pics for that Salamander: You can see that the other Salamander is a bit bigger but also quite a bit taller.
Also want to mention that the material (resin) that they used was pretty good. Not a lot of flash and no real holes or anything.
It does get in the way slightly. I just tried it out with some saurus warriors. I only own the one with the great weapon option and it is a bit smaller than the current edition kroxigors (though it dwarfs the previous edition skinny kroxigors). I'm trying get him to fit nicely along with current edition kroxigors by... building a custom weapon which is a bit larger and weighty than the original (complete) basing him on something that gives him a little extra height (work in progress... in the sense that I haven't yet started it! ) Hooray for non GW Failcast resin!
Here you can see what I use as salamander... It's the baby crocodile\ alligator from schleich. Here's the original. And I also bought this guy. He's a bit smaller but we'll see how it works.
The top one is actually taller, the bottom one is a bit smaller than a Krox, probably not the best choice for a Proxigor. What I'd be tempted to do if you're looking at a salamander conversion is to use a bits site, ebay, or raid a friend's left overs from a varghiest box. You can use the flesh hounds of Khorne and the wings from a vargheist to make a very impressive sail for a salamander, these wings in particular.