I can say without a shadow of doubt IOT was not demanding, more draining, in a 'sap the very soul from you body' kind of way. 2 weeks crammed into 9 months, the worst 9 months of my life!
Now that I think about it, commission from the start as IOT after being a SNCO for over a decade is nauseating and soul destroying in equal measure and a complete waste of everybody’s time and effort.