Thanks Jamestkirk for proving my point, yes the SOP's are in some cases a carbon copy or even more restricting than EU/FAA OPS, so why worry yourself with the original documentation? (unless of course your company is not using an approved operating manual)
I have read annex 3 (a while ago now), but its about pre-flight planning, however, the original question said nothing about being in the planning stages of flight (i.e the crew room).
The x-wind limitations stated in my AOM are based on a constant wind, there is no 'gust limit' therefore you cant apply it. However, if the constant x-wind componant is 1kt below the limit and the gust is varying between +/- 10 of that limit, as PEI_3721 has already said, airmanship should tell you to hold for it to calm down or divert