QNH 1013 - You haven't read my previous post thoroughly. Of course the IMC rating was introduced to allow flight in IMC, but only in cases when VFR flight went wrong and it unexpectedly became necessary to fly through cloud to get home. It was never intended that the holder of the IMC rating should plan to fly in IMC.
It has, not surprisingly, become clear since the introduction of the rating that its benefits only marginally (if at all) outweigh its drawbacks and that it is routinely being abused. The AAIB has recommended withdrawal on a number of occasions having identified abuse of the rating as a contributing factor in fatal accidents.