Not many people around here run these type of tires. You'd be best to use Google. You'll get hundreds (if not thousands) of reviews.
But here's my take.
They are an excellent, mud oriented tire. They have an extremely high wear rate and are also extremely durable in all other areas as well.
If you ride in areas that is more wet than dry, they are a tried and true performer. If you ride mostly dry trails, there is better options out there.
Some run skinny tires at all 4 positions for many reasons. The same can be said of why people run all wides.
If you have a smaller engine or no low range, then 4 skinny tires are easier to turn than wides. Additionally, if you ride mud holes with a bottom, then skinny will sink easier to grab the bottom for traction.
The list of reasons is endless.
I run them on my Grizzly 400. Everything above mentioned , I agree.
They are awesome for mudding , very very durable. They do ride Pretty darn rough though on hard packed trails , as they have large gaps between treads. I like them for the money , hard to beat mud tire. If comfort is not a big deal , buy them. If you want a really smooth ride , look elsewhere.