For me, I saw an improvement in my sharpening, especially in terms of repeatability and consistency in the edge.
More importantly, I found my sharpening time drastically reduced. Now it is literally a few seconds on the grinder and back to work.
Side note: While I use slow speed (1750 RPM) grinder with my Wolverine, I've found that for a final pass, I use my Wolverine and then turn to the leather wheel on my Tormek to get a razor sharp edge. Once again, only a few extra seconds.