The operators up north prefer an unrestricted NVFR with the pre-requisite experience stated in the CAO for charter work, but ideally both.
The reason being is that if you only have a CIR it needs to be kept both current and recent to exercise the privileges which costs the operator money to do that. A night VFR is valid permanently, the only requirement to maintain decency is to do 3 take offs and landings.
Hope that helps
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The Kelpie