Yes it is annoying, I had it strong for probably 2-3 years before I went to see a dr. about it, since I thought it was stress/anxiety and that I could just relax it away. Wrong.
But, I'm not sure in my case if excessive reflux was the cause. I actually think I developed some kind of sensitivity/nerve thing, which acid made worse.. so reducing acid helped, but acid may not have been the root cause. That's the boat I'm in now, the surgery helped the symptoms some, but either the nerves are damaged beyond repair, or there is some other cause of sensitivity and maybe I didn't need surgery or a PPI.
I have heard that LPR symptoms can take a long time to improve with a PPI, because the throat is so sensitive to acid. In my case as I mentioned, my globus feeling went away within a day or two of a PPI, but then again, I do not necessarily think acid was the cause of my globus (as described in previous paragraph). Yes this is a very confusing part of the body, there are so many things that can affect it. I hope I am eliminating possibilities as I continue to push my health care providers for answers.
Good luck, I'll be looking forward to your endoscopy results, but don't be surprised if they find mild or no irritation. GI are used to dealing with heartburn cases, so if they don't see signs consistent with heartburn patients (visible irritation of esophagus), they'll probably tell you that you don't have a reflux problem. They may or may not be right.