Some (eventual) bite work on sleeve or suit will be good so you can note how much fight he brings to the table. Casso has good response, you got something good to build on that's certain. I like to see you're staying away from the typical prey work!
Dani this literally is all Raw and first time this situation for Casso, so what we see is the true character of the dog..
I mean he could of been conditioned and/or trained to cover up (mask) his weak points, but at the end of the day ;
deep down the dog is as couageous as his genes are IMO..
What i see in this clip, is that his tail is high and no hackles raised, with forward movement and the rythym of barking was only defensive..
But i do like for other Forum members to give there opinion on what they see in his reaction and why ??
Like to hear what Santos thinks about Casso's reaction & why, also Roger or AXX Police tracker, as they seem to have more experience in this area i feel..
very good reaction! 
Thanks Fabius
