Lamy Violet is, curiously, only available in cartridge form. While I tend to shy away from cartridges, there certainly is a convenience to be had for students or other people on the go. This ink is far to the magenta end of the purple spectrum and while too bright for use in most office environments, it is great for marking up documents.
Shading: This ink does not have any significant shading properties.
Bleed Through: Some bleed through is experienced in all nib sizes.
Show Through: Show through is an issue on both Copy paper and Field Notes.
Saturation: Higher than average saturation.
Water Resistance: None.
Drying Time: Quite respectable, 20 seconds using an EF nib on Rhodia.
Flow: Good flow and lubrication.
Colour Make Up
This ink trace is composed of magenta pink.
As you can see, I really don't have much in the way of similar inks on hand. Looking at the Goulet Pens website, it would appear that Pelikan Violet and Platinum Violet ink cartridges are both good matches but I don't have them on hand to confirm that.
This is a vibrant purple that works well for document markup. I find it a bit too loud for everyday use but the extroverts amongst us would probably put it to good use in journalling. If you decide to add this to your collection you will have to be content with cartridges. I'm not crazy about cartridges but they work just fine so long as you limit yourself to Lamy pens such as the Studio, Al Star, or Safari. Pens from other manufacturers need not apply.
For other reviews of this ink search Ian Hedley's Pennaquod search engine.