The StickVise arrived this morning. It works very well and screams quality. I am very happy.
The round rod is too long for me (my board are small, some only 2-3cm in width) so plan to chop 6cm of so. The stock wing nut works well so I will stay with it. I rotated the plastic jaws 180 degrees to use the L shape side rather than the V shape side. This provides better access to components and pads near the edge of the board (have the L side as the factory default?). The plastic jaws have good surface finish, not 3D printed, would be nice to ship with a spare or allow to buy extra when ordering the StickVise (especially if they are not solder temperature resistant). The spring action is a little bit notchy, may get smoother after some usage, but works well anyway and not a major issue. I put a thin layer of silicon grease on the thumb screws and main rod and it helps a little bit. The stock plastic jaws are very good, I don't think I will need the other kinds (downloadable 3D models). Comparing it to the miniature Micro Mark vise, the StickVise works better in two respects, the print action compensates for not perfectly rectangular boards and the single rod design allows the vise to adapt to the surface (better stability).