I have for now. In truth, it is more likely to be pure snobbery that would make me change it. I had a pre-EB Stingray many moons ago and the combination of the stock pick-up and Retrovibe pre-amp get me a sound that is pretty much the same as my recollection of the sound of the original.
I was careful to get a pre-amp that set out to emulate the original 2 eq pre-amp and the Retrovibe nails it.