I have the internal voice while reading but I also read faster than almost everyone I know. The "voice" is disembodied and doesn't "sound" like anyone I know. It doesn't sound like VoiceOver at high speed, but the sensation is more like my brain is fast-forwarding time so the voice and the understanding of the words are happening at an accelerated rate. I recognize word shapes while reading but that doesn't seem to affect the voice. If the real sound of the word differs from what I thought it was when I first learned the word it is extremely difficult to change the internal voice and consequently how I pronounce the word.

My internal thoughts also seem to be expressed this way, though not necessarily all the time. Doubts or alternate viewpoints are often alternate voices and I can "hear" the arguments.