Texchappy
Yep, same here. I think I need to go back to the 'don't over think this' comment - as is probably apparent I'm prone to this. I can do a lot with the 6mm I already have so I will get it going into wood. If I like it then I'll keep going and get the sizes I need when I need them. If I don't then I know where to find several brands of western chisels for gosh'k sakes.

If I find I need a true 1/4" or any other exact imperial size then same deal, I can always get it.