I'm not sure what you are trying to achieve, Rob. Butt chisels, as far as I know, are just short chisels, but you've turned handles which are not only short, but are also only suitable for hand-holding. In other words, you've now got short chisels you can't use a mallet with. That's a pretty singular and specialised niche, so you must have created these with a very specific job in mind. Care to share?
My everyday chisels are a short Stanley set. Not sure what number it is, but they are essentially butt chisels. So I've got short chisels I can use in the hand, but, (and this is what I don't get), I can (and do, all the time) still hit them with a mallet. Why would you take that option away?