We can't use them (or anything like them) as it's against policy at our facility. Too much potential for non-work related usage. Also as TheCommuter stated, using your personal Ipad for anything patient related is flirting with a HIPAA violation. I make any notes on my census sheet and shred that at the end of each shift. I might consider keeping it in my locker in case I had to look something up during a break but I definitely wouldn't carry it on the floor with me.
Personally I can't imagine having to carry something so cumbersome. As it is, you never seem to have enough hands.