I had the TIF back in August. The fact that you haven't been scheduled for a manometry before this type of procedure concerns me, more to the fact that your physician isn't necessarily being thorough rather than critical information the test may provide. Manometry doesn't always provide conclusive results, as in my case -- it proved negative, although something is obviously weak in my LES.
In spite of this, I do agree with Michelle that you should have the test done, on the off-side chance that it could show something important. You also didn't mention anything about biopsies...have you been checked for eosinophil counts?
Best of luck!
P.S. You may want to edit your post and add a subject line so you can find it later to review your responses, and perhaps add something more.