I was dubious about rubber belts for a whole bunch of reasons, including the amount of weight I have to wear, and my feeling that they would be hard to release if one needed to. But Dumpster Diver was so convinced about them that he actually mailed me one to try, and told me to pay for it if I liked it.
He got paid.
Mine's a Mako, holds 20 pounds of shaped hard weights, and the only complaint I have about it is that I haven't yet figured out the best way to secure the weights so they don't slide (standard triglides won't go on the rubber).
Great to hear that you like our belt. These will work, however, they have the extra D-Ring attached.
Maximum weight capacity on an elastic belt is probably somewhere around 25 lbs or so. If you need more lead than that, it might be more comfortable to add some lead to your BC or harness etc. (please make sure you have enough ditchable lead in an emergency).