The so called angle milling vises are pretty whimpy too. Maybe ok for a home shop but I wouldn't use one for a boat anchor. I you are not doing compound angles probably the best thing to use is an Angle Table. Or make yourself some matched angle blocks of various degrees out of ground flat stock and just clamp the work up your regular vise
The optimist says the glass is half full, the pessimist says it's half empty. The paranoid in me says somebody put a hole in it.
Remember pessimists are at heart opptomists. They know things can and will get worse.