I killed this as a level 56 SMN without trouble.
A level 50 mob would con DC to me (at this level Sabotenders in Altepa, level 42-46 conned EP).
I'd say this is more of a level 40~ mob.
And no, he's not a two hour spawn. I camped him for 1 hour once, he popped, I killed and he dropped nothing.
Then I camped him again the following day, a SAM was also there and he'd been camping it, no pop after 2 hours (from when I got there) and he leaves, I stay another 45 minutes and still no pop.