hello gaucho,
i, like other members here use an integrated weight system
it is easier to place the weight where you need it and it gives you the ability to still use a belt. i normally carry around 20# of ditchable weight. it is split between my weight belt and my bc. you should consult the manufacturer of your bc to find how much weight you can safely put in your bc. you don't want to void the warranty. i too was skeptical about having a weight belt along with my integrated system, worrying about losing my belt, i simply added another buckle to my weight belt, just make sure you use a steel buckle, they do hold better than those plastic ones. just be sure your dive buddies know that you have two buckles instead of one, they would rather know before the dive than to find out in and emergency. hope this helps
sam