In my career I have landed (both P1 & P2) in winds gusting 50 kts on innumerable occasions worldwide. Sometimes it has been after a GA but the conditions when we landed have always been within limits. A/C types have been turboprops, twinjets and 4 engine jets.
I assume your limitation on gusts is only during the latter stages of an approach otherwise I see it as completely unrealistic..
Our ops limitations are not predicated on gusts
