Hi Pillpusher,
I cut loads of leather with a laser and have been doing so since 2011. I mainly cut small pieces; I'm a jewelry designer. At our maker space, we have a 45-watt laser and it can effectively cut up to a 6-7 oz veg tan hide. Before I laser cut the veg tan, I soak it in water which helps it lay flat and also helps with reducing burning and charring. Instead of beveling the edges of my piece with a bevelling tool, I wait until it's dry and use a sanding drum on my flex shaft. Since the edges are a bit "crispy" from the laser, I also sand the entire edge a little bit to rough up the fibers; this makes it so that when I burnish the edges with my burnishing tool, there's a bit more to burnish and I get a nice rounded edge. You can see the edges in the photo I attached. There's definitely a smell when the laser cuts the leather, but I and everyone else at my maker space have gotten used to it since there are loads of others cutting leather too. I've tried all kinds of leather but the ones I've had the most success with are veg tanned, deer, elk, pig, goat, and suede - leather that typically hasn't been treated with any waxes. I will say that when I cut my suede pieces, I have to clean the edges very well since the charring will transfer to garments. I'm assuming you've already learned a ton since your original entry was back in 2016. Cheers!