Yeap!
If you don't have roll spoilers, yes it is acceptable to have full aileron into the wind in case of strong X-winds.
With roll spoilers all you need is enough aileron into the wind until the spoilers come out then release a bit to make them flush with the wing, no matter how strong the wind is.
It's about time that some of you guys admit that you were wrong all these years.......plus, read the Training Part of your airplane and I bet you that this is exactly what it says......not something issued by some of your own pilots, but Boeing or Airbus.
Full aileron on one side, with full roll spoilers on the other side, is lots of drag not accounted for, and poor poor technique......Sorry, drop it.