What about the noise level? Significant reduction of whining I hope
No whining at all. Only other noise coming directly from the belt/sprocket is that of the belt whirring around. This has increased due to running the belt much looser than Morgan sets them. The noise is not that much, either. You should be able to twist the belt up to 90 degrees and have a deflection of 1.5 to 2.0mm. This also eases the sound coming from the bevel box as it is most pronounced when the belt is too tight.
What's your mileage? Who cares. Is it practical? See #1. What happens when it rains? You get wet.