I saw it when it was maybe 75% done? No hardware yet but all the major wood working seemed done. I know it didn't have a finish on it yet as Martin commented on how holly can react to different finish types. My bass will also be a 6 string, though headless. The body was originally going to be a darker finish and/or dark woods, but seeing that holly in person changed my mind. Your bass made me re-think two things, the overall color and the ramp.
I probably looked at every picture of finished holly on the internet after I left his shop. Martin warned me that even though I was so taken with it in person in its raw state, it would change a bit and likely get warmer and/or yellowish after even a clear finish went on it. He also mentioned how challenging it can be to actually find a clean and large enough piece of holly to cover a whole top, so I could be waiting a while for him to hunt another down. I think he said they usually have black flecks throughout, and you guys got lucky with your top as the few it had could be strategically placed where the knobs were getting drilled. So I eventually passed on that idea but we stayed white-ish instead of dark. It's going to have a poplar burl top with a transparent white finish to try and get a surface of the moon vibe. I shared a bunch of pics with him and he thinks it's doable.
I was on the fence about a one-piece ramp until I saw your bass in person. I don't currently have a bass with a built-in, but I've tried adding a carved piece between pickups on a few. For whatever reason it's one of those things that I'm very hot and cold on. I don't like the look of the added piece between the pickups, and most of the built-in's I see don't look quite right. The only maker I've seen that consistently cranks out one's I love is Adamovic. I can't really say why though, it's a totally emotional response, devoid of any logic lol. When I saw yours though, I really liked the way Martin executed it and how it didn't seem to disrupt the line of the instrument, so that sold me on it. It will probably be Aguilar Super Doubles with exposed poles, though I'm on the fence with exposed vs. covered, mostly due to my tendency to dig in hard and run the risk of arcing the poles. I think it will come down to the pole and string alignment. I recently got a bass with Super Doubles (stock casings) and I'm about to have a re-worked instrument with a solid ramp and exposed Zen Blades, so I'm hoping the combo of the two will help me decide ahead of Martin needing the final verdict.
Speaking of, it's been just over 7 months so I'm sure things are moving along. He hit me up a few weeks ago to confirm some things about the fretboard he was working on. So at the very least there's a new neck in my future