I recently read that Barnett's Bicycle Manual recommends a certain
spoke orientation for wheels with disc hubs. They state that the
major disc brake manufacturers don't specifically require this
orientation, but they recommend it. They also note that the
orientation is what their wheelbuilding instructions follow.

I recently had a wheelset built up for disc brakes (700c wheels, if it
makes a difference), and the spoke orientation appears to not follow
Barnett's recommendations, if I understand them correctly.

Is it common to follow these reccomendations? What's the likely
outcome for wheels with reversed orientation - going out of true?
broken spokes? spokes pulling through the rim? nuclear war?

Here's the blurb from chapter 37 about disc brakes:

"The recommended cross patterns are limited to 3x and4x. Deceleration
can occur much more rapidly than acceleration, so consequently the
tornsional loads from deceleration are much higher than those
generated during acceleration. The recommened cross patterns are
required to transfer the higher torsional loads that hub-mounted
brakes can generate during rapid deceleration.

"Although Hayes makes no recommendation regarding lacing patterns,
other manufacturers require that the left-side head-out spokes radiate
clockwise from the hub and that the right-side head-in spokes radiate
counterclockwise from the hub. These are the same directions that
result from following the wheel-lacing instructions in this manual.
The vernacular terms for these patterns are that the 'pulling' spokes
are "head out" and the "pushing" spokes are 'head in'. An alternate
term to 'pulling' is 'trailing' and an alternate term to 'pushing'" is
'leading'."

TIA,
Michael