Holding hands is easy, linking arms through your is easy, not sure about arm round the waist for long periods.
What i find really hard is when sleeping and cuddle or spoon, what the heck do you do with the arm on the bottom. Cant let her sleep on it, it gets comfortable when i rest my head on it for long periods and it creates a gap if i put it in front of me.
Under her neck... I have puny woman arms though.