Gravitas Vac 2.0: A Review of the Modular Vacuum-Filler Fountain Pen

Overseas fountain pen review YouTuber "sbrebrown" (66.5k subscribers) reviewed the "Vac 2.0" from fountain pen brand Gravitas Pens. This article summarizes the content of that video.
About the product
Priced at 195 euros (excluding tax). A disassembly wrench (12 euros), silicone grease (8 euros), and oil (8 euros) are sold separately. It fills using a vacuum mechanism (the "Kraken" filling system) that can hold a large volume of ink. The barrel is made of the translucent resin Ultem, the cap and end pieces are anodized aluminum, and the section is stainless steel with a black PVD coating.
Specs
The nib is a newly developed #6 stainless steel nib (black-coated), designed without a breather hole and with a longer slit. It's available in EF, F, M, and B widths, and is compatible with JoWo nib units. The section is a screw-on modular design that can be disassembled.
What the video says
The video praises the in-house nib for writing smoothly right out of the box, the high maintainability thanks to the screw-off section that allows for easy cleaning, and the quality relative to the 195-euro price. It also highlights that the translucent barrel and ink window on the section let you check ink levels not just in the main tank but also near the nib. On the other hand, it notes that the section's cap threads protrude slightly outward, and that Ultem's characteristic yellowish look and the pointed shape of the cap end are points of personal preference.
For the full review, watch sbrebrown's video.