And here's the claw scanner all ready to use. The rig isn't that awfully good but for the purpose of this project this is all I needed. I'll probably clean it up a bit more before I'll make this public on the workshop.
Installation:
drop the models folder from the zip to: \steamapps\common\Half-Life Alyx\content\hlvr_addons\your addon's name
if successful, the model should come up in the asset browser if you search "parry". There will be some waiting time depending on your machine as Source 2 has to create the compiled files from the content files.