i never really liked sidechaining an rarely used it. if -at all- mainly because people said it was a key element in techno etc. i just think: try different methods - see what works for you --> use it. i agree that from the purely technical side there are better ways.. i.e. volume automation, velocities.. from an artistical point i'd say use whatever you please in whatever way you like, m'key...
benni benassi's stuff etc. etc. lived from sidechained/bass and sidechained verb. in an overdosed way. and i kinda liked it, call me cheesey.
i don't really want to talk about it, tbh. :)