For calm hives, rigger boots are fine. If they are feisty, then they are very vulnerable, and once they start stinging the leather, you remain a target for a long time.
We had to deal with some bad bees last weekend, so I pulled on my old hunters. Absolute hell to get on and off and pretty uncomfortable.
Mrs rae has some LeChameau leather lined things with a full length zip. I am rather envious....