I am an avid underwater photographer with about 1500-2000 dives. So not being able to dive would be devastating. Probably my hearing loss is dive related though, so indirectly so is my tinnitus.
I asked my ENT, and he says he sees tons of dive related hearing problems and they're mostly in the lower frequencies. My hearing loss is at 4 kHz, so somewhere below that. He doesn't think my hearing loss is dive related, and he thinks diving should be ok with tinnitus. Now, I don't have a very high opinion of this (or any) ENT, so we'll see.