I've not been playing IVAN that long (in terms of actual game play - maybe someone remembers my few posts a little over a year ago?).
In the very beginning of UT1, I found an Ommel Tooth Armor +1 or 2 with an AV of 26 as I remember it.
Wearing it had a heavy penalty (-3, I believe) to both DEX and AGI, but it gave a several point bonus to END. I was so sad when that character kicked the bucket...
Hopefully I'll get a bones file sometime. If I do, I'll give you the exact stats of this armor, since I could be slightly wrong.