In twenty yrs as an OR.RN, I have never heard of it. I would steer clear.i wouldn't want to jeopardize my own license because some surgeon doesn't want to pay a RN to circulate. Trust your gut...
I understand tour desire to be in the OR and I know you mentioned pediatrics BUT I personally would not risk my wrist. Carrying cases of instruments and the components needed for orthopedics can definatlynexceed 50 lbs and also some of the patients may also exceed 50 lbs, so I would think long and hard about this one. I hope this helps