That's a design that might look good on paper or computer simulations, but in real life it cries out "catastrophic failure". Actually, I don't think that design looks good on paper or in real life.
I wouldn't trust it.
That's my take too. It seems like some unexpected weather condition could torque the two fuselages out of acceptable alignment. They'd start vibrating out of control until something broke. But I'm not in that line of work - I hope the engineers knew what they were doing.