I’m afraid that’s not possible mate, it can only go in the lathe one way. If I were to cut a square off and turn it around it wouldn’t be anywhere near long enough to make the drip tip after clamping it in the jaws
I am getting some more blanks in come the new year for some other people so maybe there might be something in the new batch you fancy if not. I would imagine it will be quite difficult to find something with the grain going the other way but I will certainly have a look for you!
I also have a couple of stab wood blanks that I haven’t cut yet but they aren’t brown wood, they are kind of blue and grey colours.