The problem is in the wording.
It is "recomended" that 200ft is added to the published approach minima.
However, the absolute minima for a non-precision approach is 600ft (MDH).
Circling is part of a non-precision approach.
Personally, for IMC rating flying, I would addd 200ft to the circling minima. If one was to use the IMC straight-in minima, one could fall foul of a higher circling minima.
Regards,
DFC