Hi Erik,

I've never tried the kneel-sit style of chairs, except for short periods. I guess you're kind of stuck in one position - maybe that's why it's a bit uncomfortable? I think naturally, we like to move around and shift postures while we're sitting...

Anyhow, I'll steer clear of the kneel-sit chairs. All the ones I've seen are quite pricey anyhow!

- Dien