No elastic but I have a some Wranglers that I picked up at Wal-Mart for a decent price. I wear the shorts almost everyday to work during the summer and the pants a couple of times each week when its too cold for the shorts. I've never received a second glance from anyone. To me, they don't look tactical. Might work for you if you can get past the lack of elastic waistband.
http://www.walmart.com/search/search-ng.do?search_query=wrangler+cargo&ic=16_0&Find=Find&search_constraint=0
The Elite discreet are the ones I have. No cargo pockets.Good tip on Woolrich... Found this link on eBay.
http://www.ebay.com/itm/like/400540101704?lpid=82