Can report.. the ZR knob is a direct replacement and fits perfectly. It could be a little bigger, but that may look strange and it would cover the volume lettering below. It is 100% better than the original and looks OEM. I got the black one and it blends perfect with the dash on the LC trim. The silver version would also look good. I found out today by installing, that if you push the volume knob it will mute the audio. (I should read the manual). The finish and machining is perfect and the metal has good grip. I think the person that make these also does high end gun parts, so there was time put into designing this. I have seen him comment on other forums, and I believe he has a LC.
It has little light holes to allow the back light to travel through the knob so you can see it at night. My only real suggestion which is minor, is that the knob could be fitted with a clear plastic internal ring to bring the light through the knob a little better. You can tell the light source is coming from behind the knob. This is very minor and just my opinion. The stock Toyota knobs use clear plastic to defuse and direct the light to the front of the knob.
I am happy with it and can recommend over stock.
I may try the the RAV4 knob just for comparison, but this one looks better and a little more unique.