Obviously pilots of this type need to have the ability to do this.
It might be a liitle embarrasing to be caught by the general public.
BUT the idea that these guys are not allowed to do this normally and are then to be expected to heroically figure it out for the exceptional circmstances when they will need it is dangerous and silly.
Especially under difficult circumstances you want to know exactly what you can and cannot do.
This should be in the 'can' category, these guys do not deserve the armchair criticism of distinguished ppruners.