I have a MUDD and have carried it as my work knife for the past several months.
It is very robust. The action is smooth and reliable. I have opened it countless times and the action is always the same. The pivot is protected from dirt, so I don't expect that to change.
I normally wear gloves, and this knife is easy to open and manipulate while wearing gloves.
The handle is very aggressively textured, I knocked the "teeth" down a bit on my belt grinder.
I have used the blade to cut, scrape, and pry. I have dropped this knife from a 20 foot height onto concrete. Only now after several months of pretty hard use has the blade developed a very slight amount of blade play.
I tied a lanyard to the knife and let that hang out of my pocket a few inches. This makes it easy to pull the knife out of my pocket even wearing gloves.
It's a good, sturdy knife, I like mine a lot.
:thumbup:
Andy