Quote Originally Posted by ROL View Post
I bought a set of these some years ago for some particularly difficult spotting. I found them to be entirely useless and went back to Spotone and brush.

I think the OP's suggestion to be interesting, although I'm not sure how you get the inks safely out of the cartridges.
Which just shows that YMM indeed V.

I find Spotone pens to be great - far easier to use (for me) than a brush.

Maybe it is because I am left handed.

With respect to the OP's suggestion, I would expect that some of the inkjet inks would work better than others. Inks designed to be used with baryta coated papers would probably be ones to consider.