You can place a belly band anywhere you want around your waist.
But again, the trick is that you won't be able to adjust the carry angle. You can also adjust which hand will be used to draw by simply reversing which side is outside and which side is in.
Cmofortable all day? Not really. In order to remain secure, at least for me, it has to stay tight. It feels especially good when it's time for it to come off. On the plus side, it doesn't move around much at all when paired with a belted pair of pants on top. This would mean a lot more for me if it kept my Glock in a better position to reduce printing.
You mileage may or may not vary. I will say, if you want one in light of the info in this thread, you may as well get one. There will be times, perhaps regularly, where it could be handy for you if you want minimally printing IWB carry without resorting to mexi carry.