I am yet to fly in CAVOC! so far during my PPl and Hourbuilding I am yet to have that ellusive perfect day! And as for Xwind landings well again that's all we seem to get at our FTO!
As for training, if I had waitied for CAVOC and no Xcrosswind while training I would be lucky to have done 1 hour so far! Maybe it's my training school, but the only days we didn't go up was when the was a severe weather warning or the Vis was too bad. I can remember doing some circuits with my instructors where the xcross wind was on the 12kt limit!
Guess it's a good thing then!