I use my surface on my lap quite a lot, and it works fine, a lot less wobbly and no heat on thighs (or calves, not sure what your upper legs is called in Englis

I use my surface on my lap quite a lot, and it works fine, a lot less wobbly and no heat on thighs (or calves, not sure what your upper legs is called in English). It can’t be used on stomach in bed though, like at all. So there are certainly limitations a laptop doesn’t have.