To me, any orientation means frontways, backways, sideways, slantways, and so forth.
I've done what you are describing, for use as sidelight, but for a one-off, not a long run. One trick I've learned is to hang the unit from the vertical with the yoke either US or DS, 90° from the target, then swap P/T in the fixture set-up on the console. Makes focussing much easier.