My Enforcer tires are now @ about 28K miles. They appear that I can still drive around for another 5-10K miles.
Tire condition: There is only one spot on one tire missing a small chunk of rubber. I was worried about the side wall protection or weakness from the beginning, but they managed not to have any deep cuts nore punctures from off-roading.
Noise level: They are just as loud as the day I bought....if not louder. (I am not sure if there is any difference, though.) It seems that I can feel more vibrations when moving very slowly. It might be because the vehicle has been driven for 30K+ miles...things might be coming a little loose...
Personally, I really like Enforcers on trails. They performed very well in any of the situations that I have been...rocks, mud,... (...except on packed snow surface. They required me to pay more attention to my speed.) Of course, ice covered road is an exception for any tires. On pavement, I am/was little more cautious when the surface is wet, and I've not had any major problems.
Would I buy them again?
Probably not. I am used to be driving OLD vehicles..., and I have a habit of listening to any noises comeing from the vehicle. With Enforcers...I can't really hear anything. Since my xterra is in a good condition, it hans't been making any noises. But, I'd like to be able to after these sets. I'd also like to be able to listen to the music/radio while I'm driving without turning it up too much. Initially, I did not have a problem with the road noise, but it seems that I do now. (Have I become OLD or what?
)
...So, if anyone who has never had M/T tires and considering them,
go for them if you are willing to live with the noise. 
Basically, that's the only reason that I wouldn't be buying again...
Oh, one more thing... at least I am having a hard time wearing them out evenly..