I use OMS pockets on both my travel and cold water BP&W set-ups, problem is on my travel set-up the smaller weights I need with a 3 mil and especially with a ST72 tank. Soft weights will leak out thru gaps around the Velcro so I need to use hard weights for that set-up.
On the cold water set-up I use soft weights, one is semi soft, it’s a bag of sinkers I’ve collected :)