I did as much IF training as possible on the Bulldog in IMC; that was in the period 1990-1993.
When flying IMC with other QFI's students, it was all too obvious which of them had been doing most of their IF in 'simulated' conditions.
Some QFIs were utter wimps when it came to IF though. One of my colleagues wouldn't fly aeros above 8/8 cloud in case he had to descend with a toppled AH using the T&S
Why did he think we were tested on the use of limited panel?