I would go with the hardened wire/cord over the hole or chains. The hole would have to be perfectly aligned for your body to be of any use, and would still be difficult to clean under. BUT more importantly, if you are wanting to wear this permanently or semi-permanently the larger strap with the hole is going to sit either on the outside of your crack, or cause your crack to be spread uncomfortably (likely a mix of the two). It would also be much harder to hide under clothes in my opinion. the sleeker the design and the closer the fit to the body the easier it is to wear normal outfits... The chains that run up the sides of your bum are clearly not as secure, they allow for some movement as you go from sitting to standing, and they don't lay flat (chain never does) so i would think the movement of the chains would be irritating after a few days. I know people have had success with this style but I believe they are in cbs that are made specifically to their measurements for long term wear. The chains WILL BE SEEN through dress pants, fitted jeans, light skirts or dresses etc. I personally prefer to not have the potential for lines. Also, if you are locked with the chains, or even the hole options, there is a high chance you will cheat the system and go to your bottom in hopes of sexual stimulation. If that is what your owner/man wants then that is up to him, but since it sounds like he is allowing you some choice in what design to get then I strongly suggest an ergo waist with the corded back, this is easiest to hide, and seems to be easiest to adjust to. Hope this helps! Excited to see what is decided on!
If you haven't read this real life story I suggest you do. This is the second half, but it explains the issues I was trying to express with the hole in the back.
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