I really like these pens. I used them for addressing Christmas presents and they were extra special.
The dot side is not extremely metallic, esp on more absorbent papers. The silver one is the most metallic (shiny) of all the pens (I have all six available colors); I think the blue color is the most metallic of the colors, but none of the colored ones scream “metallic” to me. I think they’re best on less absorbent papers, since they worked well on shiny wrapping paper.
The fine-tip side seems more metallic than the dot side for all colors. Not sure why that is, but that’s been my experience.
I still enjoy them. They are more opaque than any of the regular dot markers, which are more watercolor-like and transparent. The opacity of these is a nice variation.