My partner prefers that position. He is a bit
of a toe licker so finds it satisfying to keep
my foot handy...ggg. I have to remind him I am
not a Barbie doll whose legs only go UP, and that
I never was good at being a contortionist although
some days he is good at convincing me otherwise.
As long as you both come to the understanding that
if it becomes painful, you will shift your legs,
body, hips, whatever, having a sense of humor helps
and so does asking for some variety~!