Define "crapped up". I use Canon
equipment myself and Nikon
equipment at work. I don't see a
difference in build quality that would
make one better than the other. Also,
you'd be paying a premium for unused
technology using the Nikon flash on the
Canon body.
Perhaps a Metz or Sunpak handle
mount flash might serve your needs. I
used a Sunpak 622 for many years for
rapid fire continuous use in
skateboarding photos. Took many
knocks and never failed. Also you have
the option of dedicated modules to
match your camera's flash feature set
or just keep it simple with manual or
auto flash mode.
I read lots of reviews about Yongnuo,
Lumapro, and other Chinese products
that amount to OK build quality at dirt
cheap prices and "I'll just buy another
WHEN it breaks" attitudes. This seems
silly to me like old school disposable
flash cubes.
Your camera is the best of the best
(1DX), why not get a robust,
serviceable, professional flash for your
work?