I think that, at the very least, they are a little harder on extractor hooks. Also, if it's got a lacquer on it (which many times they do), this can melt (once the barrel gets hot) and accumulate in the chamber, which can be hard to clean out and could cause reliability issues.
Bottom line, I won't use it.
I have a few old boxes of it (Wolf brand) that I bought many years ago not realizing it was steel cased, but I wouldn't use them unless I had no other option. They will likely be included in my legacy, i.e., I will likely never use them.
