KerryIrons, you and others have raised a valid point. Is the extra strength needed. My point of view falls on the "no" side of the equation. I'm a 235 pound guy that is less than graceful on a mountain bike and have never folded a wheel or broken a spoke on one. My road bikes have lots and lots of miles, with one of them using wheels that I built over 30 years ago and have at least 50,000 miles on them. Zero issues with those wheels.
On my ti bike the wheels are newer, 4 seasons old and only 7000 miles on them, but they have yet to require any truing or tensioning. My son rides like I used to ride, 4-5 thousand miles a year and he has zero issues with traditional rims as long as he is using quality parts.
I say most people do not need the additional spoke tension that an OC rim provides on the non-drive side spokes. If a clod like me doesn't need it, then I earnestly doubt anyone else will.