Yookers Yooth refillable fibre tipped pens

[gnat9]

Hello everyone,

It is quite possibly sacrilege to discuss this on a fountain pen forum but I'll do it anyway.

I've ordered one of these

https://www.yookers-shop.com/product-category/yooth/

They are fibre tipped pens that use fountain pen cartridges, and can also be refilled from a bottle using converters.

I like fibre tipped pens. It would be great if they could be refilled with fountain pen ink. But I've tried refilling other fibre tips with them and the results weren't very good. So I'm curious about this brand. The reviews seem to be quite encouraging.

Has anyone tried this brand? What's your opinion?