Double Blades on Bagger???

I have seen multiple posts on double blades with mulch kit. Has anyone tried double blades on their bagging setup. Did it help any?

 

Works great in the wet and for tall thick grass. When it is dry it kicks up a lot of dust though the bag[grass gobbler]. I use gator blades for the top set to reduce this and blow out.

 

Works fine!! Ive run double blades and meg-mos with the accelerator and ultravac.
John