in LA oddly i've seen mostly no lines like everyone else (hell particularly here).
one dealer actually told me that an m-sport is pretty hard to sell, because most of the i just want a BMW types obviously wont buy it . i've seen some luxury / sport line ones. i work in santa monica and just got back from lunch and actually saw one of each. a sport driven by some older woman oddly and a luxury buy a middle aged guy.
that said, never seen an m-sport on the street. and i've seen 1 335i ever on a lot.