Hi Eric, yes to both. It never even crossed my mind how easy it is to walk away with a bike seat/post until I heard Court mention it in one of his videos. So I searched ways to secure bike seats and apparently kids from NYC have used this method for years and I think it also looks kinda cool too.
I went and got the Bodyfloat post so my butt's resting on about $325 total so I'm going to do "Something" similar pretty quick. Thanks for the inspiration!
You sold me on the chaining the seat; I found a $10 Kryptonite cable and a combo lock; nothing to stop a serious thief but enough to keep the average viewer honest.