Thats what I do with mt CC BEC. Its really nice to be able to get that extra little oomph out of the servos. The CC BEC is the cats ass IMO.
That said... I have never had anything but good luck with the 358,359, 361 Airtronics serovs and they are kinda my default steering servo for trucks buggies truggies or whatever. As long as you set it up right and set your EPA you should have no issues with the steering servo you have lasting a while. At some point more just becomes more, not necesarily better. If you are running a 200 oz .10 sec servo now you probably wont really notice much difference in real world application unless you are running a rock crawler.