I use it. For a hundred amps I run #1/0 most of the time, but that is still not required here yet.(2005 nec) . I bid the jobs that way. I never even saw any copper ser cable in Hawaii until I worked a few military projects. They can afford it and the extra shipping costs due to the weight of it. This state runs on aluminum ser cable for the most part. I have seen lots of problems with it on beach side or near the beach houses over the years, but even then usually it is first the meter can rusting away and letting in extra moisture that starts that ball rolling. Copper would probably not have done any better in that event.
