Just add to Shunter's comment for the sake of factual accuracy there is no legal difference between the DH for an IMCr holder and an IR holder. This is an age old myth that requires to be regularly dispelled.
Those who roll out the myth usually try and cover up their error by pointing out a heigher DH is both recommended and sensible - albeit they usually prefer somewhat stronger language.
I can think of a few IR holders who would be wise to avoid flying to minima and a few IMCr holders for that matter. The correct answer is know your own limitations and if you are not current increase your minima. Not rocket science really, is it?