Actually, yes. I've been going through a database structure provided by a vendor that sells their software globally. We use it only in the USA with English, and we've found that we would be able to cut the size of our databases by a substantial amount by changing many of the nchar() columns to varchar(). There are a few of those columns that vary in length, but only slightly, and use most of the vendor-allocated column length, so they will be changed from nchar() to char(), and not varchar().