"to big and uncomfortable" I've heard that phrase ( or similar) applied to motorcycle helmets, steeltoed boots, athletic supporters and prescription glasses. During my Coast Guard service we had kapok lifepreservers ( some dated 1945), standard wet suits , Bell motorcycle helmets and a survival belt with issue ( and inadequate) gear which we augmented. The first float coats were immediately authorized as substitute standard for private purchase ( represented by todays excellent Mustang system) and survival suits were virtually unknown. Does your dry suit have reflective patches, a flotation collar to keep your face above water in case of unconsiousness, rapid donning and how long have you used it in hypothermic conditions? Ill take an uncomfortable survival suit anyday.