This is my favourite portable sharpener. It is this tiny brass sylinder shaped thing with a blade. It gives a very long point that is perfectly sharp. Sharper than the masterpiece but not so sharp it just breaks when it touches the page.
I use this one a lot. In some periods I prefer my Classroom Friendly, and in periods I prefer this. Kind of depends on my mood.
This is my favourite sharpener, if I look beyond the sharpening results though. It is such a lovely object. It looks really awesome, and it has this heavy solid feel in your hand.
I would love to recommend this as a “if you want a portable sharpener get this”, but I can’t. It is really fussy about the integrity of the pencil core and breaks the point way easier than anything else. Plus that it can be a real pain in the ass to get broken points out of it.
It is my favourite, and it could be yours too. Just be aware that it will be awesome but also break a lot of points if you drop your pencils.