I got a nice little 4/8 in the post yesterday that came shave ready. I bought it with the idea of using it to shave under my nose. I thought that I'd give it a try this morning and it worked really well. I used the small straight to do the moustache area and 6/8 to do the rest. It means I have to strop 2 razors instead of one but that's not a chore for me. I quite enjoy it. Well worth trying I think, especially if you're going to use a big bladed straight.