I believe there is video from someone's cellphone, I will see about retrieving it.

 Crash bars typically hold up pretty well unless the pipe is too thin walled, then it can fold/bend at speed and pin your leg.  This is rare, but I've seen it a few times when I worked in the ER.

 Other issues are bolts that are cheap or too small on the custom builds.  An example is the custom assembly I referenced here where he bolted the bars on the bottom.  If those are too small they will snap when the bike hits the ground at speed.

 The top connection looks good, but requires the lower to stay in place or it could "roll" so to speak around that center connection point on the frame.  For the most part the referenced setup looks good to me.

 As for our experiment we were testing a gold colored weld process against a standard one.  The gold held up for the fun drop tests, but under true stress testing it would break sooner.

 I imagine the OEM bars can just be extended near their connection points without much issue.  I'd give it a shot.