Having served in the RAF for the best part of two decades and subsequently continued to fly for a living as a civvie for over twenty five years (and still at it), I'm nearly at the end of my fifth log book.
I was a military helicopter sim instructor for about two years in total and I never logged any instructional time, only my own sim "flying" currency hours (still miss those Norway dets, though). Nor was I told to log them.
Bearing in mind that once you leave the RAF you are given your logbook/s to take away.... I soon realised that once you're a civvie and meet the minimum hours required for licence renewal once that time comes, it doesn't really matter..... no-one wants to look at them.