Wish I took some pictures before switching it out, but I tried the bars with the non-integrated spacer (the top piece to use normal stems) and hated the look. The stack of the stem is much larger than the Tarmac stem, so all I needed was the required frame top cap and a single 1cm spacer, then the bars. Wasn’t a fan of how the cables looked so I went back to the Tarmac stem spacer kit and ran into a few problems. Obviously, it’s only designed to fit with the Tarmac stem, so the required top spacer didn’t fit and I couldn’t get a headset preload that I was happy with.
So I made some modifications and have some more to do. I took one of the 1cm integrated spacers and cut out a notch for the cables to exit. But it left a little gap on the sides and back, so I have some ABS plastic sheets coming that I plan to cut and shape on top of the normal spacer to create a flush sitting top spacer that I can properly preload the headset. I’ll try to take more pictures of the process.
Edit: Also of note, the bars in the picture are an AliExpress copy of the Alpinist bar. I picked these up cheap so I can test out a new fit with the width and stem length before dropping $600 on the real Alpinist bars. Same dimensions so I can experiment a bit with fit and cable routing and worst case I don’t like it and I’m only out $100. If I can get a routing solution I am satisfied with, I can swap out for the real Alpinist bar in the future.