I haven't tried them. I have two types of garden areas; hard clay covered in compost and wood chips, and a few areas that are so loose and friable that pulling weeds isn't a chore at all. A stirrup hoe wouldn't be feasible for the first, and pretty much unnecessary for the second.
Any type of hoeing is too tiring for me, however, so I just don't do it. Instead, I use a garden fork and body weight to loosen the soil in areas that need weeded, then sit right down and push the biggest roots out with a short piece of concrete reinforcing rod. The smaller weeds just get scratched up with the end of the rod as I pass by them.
If you swing the fork out with your foot and sort of drag/bounce it back on the return, there isn't really all that much effort required to lift it either. Economize on leg fatigue by using the forward/downward pressure of your foot/leg/body on each downward motion. No thrust, shove or stomp, just a steadily increasing downward push utilizing your body weight and the force of gravity. Once it's a few inches in the dirt, push it forward and back (edgewise first, then side to side), and then lift slightly and drag it edgewise to the next area. If body weight isn't enough to get the tines down into the soil you may need to wait until it's a bit more moist.
I know this is way more info than you asked for, but just in case it helps....