I guess I should clarify, the "bottling" bucket I get for my sours will be another plain bucket
I got a bottling bucket in my first kit but I don't see the point in bottling from the spigot. A racking cane can get straight down to the bottom while the spigot is always going to leave some waste. Plus, another plain bucket can be used for anything, primary, secondary, and bottling. That way I can primary in one, rack into another, and then use the first bucket again when it's time to bottle.
I now am using the bucket with a spigot to hold my StarSan water. Though the spigot is impractical for bottling, it is quite convenient for deploying sanitizer.