The second half of Viberg’s online sample sale is going up this Monday at 12 noon, Pacific Standard Time. If you’re interested in anything, it’s probably a good idea to acquaint yourself with the company’s lasts and sizing now, so that you can get what you want before things disappear. The better deals typically don’t last longer than a few minutes on their site. You can learn more about Viberg’s sizing at StyleForum (just use the “search this thread” feature).
For what it’s worth, in their 2030 last, which is what most of their flagship service boots are built on, I find that I have to size down a full size (so if you normally take a 9D, I’d recommend an 8D). Many people on StyleForum, however, recommend only going down half a size (so 8.5D).