This setup was done successfully by a couple different CGP guys. Shawn Eadie (seen97) ran a line from after the LQ4 MAF to the front valve cover, then from the rear valve cover to a catch can, then back to the TB. Here is the pic where you can see the send and return lines:


Dave Wild (WildGS) did a really nice setup where he tapped into the supercharger housing and ran lines to the valve covers/catch can from there. Pics of the tapped housing and valve covers:
Front

Rear