Sometimes it is way too difficult to do that though. I mean look at Nadal at the professional level, I rarely see him take wide kick serves early, especially on clay.
Honestly if you expect it, just take maybe precautionary steps to be in a good position so that you don't get handcuffed. Since it is only a kick serve, it isn't going to have the same sting regular flat serves and such have so when you make contact, you can load on the ball. Best thing to do is just hit it back deep.
On clay its very tough to time it if you move in on a kick serve to the backhand, and the payoff isn't as much as a quicker court, so its better to stay a bit further back.
On a quicker hard court, though, I always think that taking the ball early on the return is the way to go. Probably because I'm 5'10'' and its almost a necessity
Kick serve to the backhand, classic stuff and everyone has difficulties with it - even the pros.
Probably more difficult for you as lefty, as you don't see that serve very often? Pretty much 80-90% of second serves righty to righty are kicked out to the backhand so we get plenty of practice with it.
Agree with Groove Dude here though, I'd step in and try and take it on the rise if I were you. Or if you have a good slice try and knife it back cross court and occasionaly down the line (tougher option though).
A good, knifing slice deep and cross court will counter the kicker nicely.