The main reason I'm even bothering with the idea is the relative difficulty sourcing Tru oil at the moment.
I didn't realise there was a shortage, but I guess there's not much that hasn't been impacted by the pandemic.

My only concern about the Walrus Oil would be that it is described as a "penetrating oil" rather than a "drying oil" despite using the the word polymerising. I find their information confusing.
A true penetrating oil (eg: pure tung oil) will not give the same finish as ones that are membrane finishes (eg: polyurethanes).