In order for the stalker to show in your arsenal, it has to have a respective "store item". This patch replaces the store item for base excalibur with one for the stalker.
In order to "own" the stalker, you still need to add /Lotus/Powersuits/Stalker/Stalker to your inventory; the easiest way is using Add Items (Raw) in the WebUI.
Known Issues
- If excalibur shows up as an invigoration, the helminth UI breaks.