Oakleys are good boots but have a real soft sole so good for Urban stuff but probably not the best boot if you're going to be out in the GFs and wadis. To go along with that if your an engineer your probably going to be carrying some pretty heavy stuff, not a lot of ankle support in the O's either. As I mentioned earlier, quite a few of the guys wear Meindls(Desert Fox I think) which are really good, hiking boots (Hanwags) and the Lowa boots (2 different desert models I believe). Not a salesman,lol, and guys obviously have preferences, those just seemed to be the boots of choice with the guys I saw.
Anyhow you know more about what you'll be doing over there than I or maybe you had those boots last time over there, I'm just throwing out my 2 cents.