My tip would be to not get the unbranded wide strapping tape - after a soaking, it loosened and rucked up in my sock! Instead, go for the branded stuff from the traders (or Boots) instead. And yes, don't rely on it for too long.
I've also found that my orthotics were angled too high, and led me to go over on my ankle a fair bit, so I've changed them and my podiatrist (another debate, I know).
BTW also see the 'ankle brace' thread in the 'Reviews' forum.
"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do." - Mark Twain