Than mine...I have no problem. I am not sure how you would slip on your face...the socks aren't for the hands...if my socks slip, I might dip too much and my hips touch the floor...it might look obscene...but no major injuries yet...LOL
My feet tend to slip backwards while I'm in the upright, 'triangular' part of the pose, mainly because I can't get my heels to touch the ground yet, so I just slip on my toes. Potentially disasterous with socks on!