Chaps aren't bad to put on and off. The advantage on a hot day is that you can unbuckle at the waist to get cooled down, or take them completely off. I have two pair. One is Stihl, and they wrap completely around my calves. I believe they have 9 buckles.Those are nice and I like the suspenders however at that price I'd be more concerned at wrecking them than injuring myself by not wearing them. A couple hundred dollar max price point is seemingly more out of reach after my brief googler searches. When I get the time hopefully sooner than later I'll probably visit a few power equipment stores to see in person what's actually out there.
The other just protects the front of my legs. They have 5 buckles. Neither takes that long to put on.
If you do buy pants, get the type with the pads sewn in. I had a set once with removable inserts but they moved around so much that I was never certain they would be there if I needed them.
When I was running saw for more than a few hours I started using ear plugs AND muffs. If I didn't, I'd listen to the saw all that night.