MIScout,
Your Roundtable friend was just pulling your leg. The Adult Men's scout trousers for the last several years has had the elastic in the waist, both in the long and short varieties. I have my old size 32 pair without elastic from the mid 1980's and the new size 32's actually fit better. You can find ones without elastic on eBay, but all the official trousers now I'm aware of have the elastic. If your still self-consious, wear the belt and no one will ever know.
Regards,
KonaScout