Its not just Cabrinha kites that have issues with leashes tangling the bar and lines. The new naish smart loop will do it, Airush 4 line kites, Slingshot link bars, and i'm sure there are a few more too. Only difference is that Cabrinha instructs people to hook their leash to a suicide setup.
I know I boast on and on about the Rev but you all really need to have a play with their new control system. From what I've seen so far, the rev and T3 bar, and the F-one Bandit bar are the only 4-line system on the market with a below the bar leash attachment. Most 5-line kites are below the bar too but I'm a 4-line man and the new SS bars are basically a 5-line setup.
Check them out when you get the chance. Sure there are some areas SS can improve next year but depower rope wear aside, they are an excellent design.