ice diving harness question

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I agree that the TransPac is nice. I have one but the wife always uses it. I use the TransPlate. 

When you say harness are you asking about the dedicated chest harness like they use in construction for fall arresters? We had them for those that had no steel D-rings or steel D-rings that didn't bartack in to something heavy. Several divers used them under their BC so you could remove your BC if you had too without getting off the line but I don't think I would want too.

My 2 cents: If your going to do more then OW diving a technical harness will give you configuration options you'll enjoy when you need to hang a pony, reels, lights, bags, ....