Hm, i did a quick research for examples how this actually looks in real.
Couldn't find "real" footage, but in movies it depends wether the person
beeing carried does a good job, "loosens" arms enough without "stiffness".
Saw a few good/convincing, more bad/unconvincing examples on youtube...
I guys keyframing according the steps of the carrier could be more convincing
than using a premade clip...
It is probably not easy to get it done proper.
Will do a test later...
Toystorylab on Vimeo :
Crassitudes (my "Alter Ego") on Youtube: 