Perhaps I'm simply beating a dead horse at this point in the discussion, but SWGs are not strome; they're a good bit lighter, about 13 oz I believe as mentioned. And, a kilt provides a good option for ventilation occassionally, so you're probably good to go. I've only been really uncomfortable in a kilt in my 22 oz WPG in a very warm, humid enviornment where I could get any breeze or air conditioning. Of couse, cotton shorts would have been pretty warm there, too.

But the relative dryness of Phoenix should offer no real problem. We wear wool kilts all year roand in the hot, humid South, and they're not bad at all.

But then, I am nearly always hot, so maybe I just don't notice it.