A good friend of mine is currently doing his IR on a twin with no de-icing kit. Yesterday, he flew in conditions which resulted in the aircraft picking up some ice (I don't know how much, but his description suggests light to moderate). MSA was above freezing level and cloud tops were to high to get above sensibly.
When my friend questioned the ice build-up, the instructor said it was OK and they should carry on and that my friend should let him know if he was having any control difficulty
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I'm quite concerned by this intructor's lack of respect for icing and the method of deciding to get out of it (if they could) - am I showing my lack of experience with non-de-iced light twins or is this instructor a bit of a 'maverick'?