Anyone experiment with "overdrive"?

[simplechamp]

For those who don't already know, overdrive refers to having slightly different gear ratios in the front and rear of the vehicle to intentionally drive the wheels at different speeds. For example, running 43/13 in the rear and 41/13 in the front. This will cause the front wheels to turn faster, and in theory the vehicle should have the tendency to "pull" itself forward rather than "push"

Does anyone have any actual experience with this? I know Xray offers overdrive gearing as an option, I'm sure some other manufacturers do to.

I'm just a bit curious about it, to see how noticeable the effects are and how much they affect the vehicle handling. Overdriving front vs. overdriving rear (seems like front would make more sense, at least to me). I have a variety of gear sets for my Jammin and thought about experimenting a little bit next time I pop the diffs out for a rebuild.