You are assuming that there is only 800 meters vis where you are flying, but remember that both criterias need to be fullfilled. Besides the vis, you have to be able to find your way with reference to the ground only, from the MSA.
That would not be very often that you can see the ground from e.g. 2000 feet with 800 meters vis. That would be if there was fog but nsc, which again would mean that the forward vis at 2000 feet would be significantly better. So what if the last 100 feet was in 800 meters if you only go 70 kts? If you had no problems positioning yourself for the final, then why waste time perhaps flying a long procedure.
IHL, what do the operators, that doesn't allow VFR, do in Canada? Never fly visuals or never go-around? LoL. Are you sure you don't mean VMC, or does ATC really cancel your IFR?