How practical is this?

The best thing for my neck has been using a standing desk. Slouching is really bad for the neck muscles while using a computer. Harder to slouch while standing.

Actually you shouldn’t sit statically at all. You can slouch, stand, sit straight but everything not longer than 1-2 hours max. You should at least put in a pause then, get up, exercise or walk for 10-15min and get back. A walking pad is also quite good but you shouldn’t use it 100% of the time either.

@ThePhoenixFire That’s why it feels more natural for me to lean backwards while at the office.