I've been trying the new Stealth bar recently, and can say that its a nice upgrade to the harness! I like the new attachment system with the lever instead of the Clickerbar. Its easy to use and straight forward. I think during winter time when kiting with gloves, that it might be difficult to open it back up, but not sure. Its built and designed well though. Its also very secure; if there is any pull on the spreader bar from a kite, it pulls that closure shut so there is no way it can open up on you.
At first I was a little confused about the large plastic backing on the sides of the harness, wondering why that was added to it. After using it, it seems to hold the spreader bar really nicely in place, and also makes the front of the harness a little more comfortable.
And most importantly, the look of it is awesome! Blacked out stealth! Enough said!