yeah, most of those (if not all) have alternate fingerings...
the altissimo notes are very usefull if used in the right place (with the right technique). If not used correctly, it will sound very shrill. the pitch can also fluctuate easily, so not all players who can play altissimo should, although if one can play that high, he or she is most likely able to play well...
alto 4 years
soprano 7 months