BEagle,
In view of the title to this thread 'IMC Uncertainties', I feel that I should add to your last post that this is another benefit of IMCR when VFR.
The ANO Schedule 8, Sect 1, Sub Sect 1 (2) (c) makes it clear that without IMCR, the absolute minimum for VFR is 3Km, and the 1500m limit is only available to IMCR holders.
This is briefly referred to in Pooley's page 5, which also gives the difference when SVFR. I believe it applies equally with permit and CofA aircraft.
MikeJ