I too clip my pager to the neck of my scrub top, but I dont ever sleep well on call so everything wakes me up.
One of the problems I encounter is when I take call at one of the community hospitals we cover. Only docs in house: 1 ER attending, 1 Moonlighter, 2 Interns.
Problem? ER doc cant leave the ER and many of the moonlighters dont really give a damn.
The other problem is the pagers are notoriously slow...not bad normally, but when theres a code it could be 5-6 minutes before you get the page after the overhead page goes out.
The only night I slept well on call is when one of the intern on-call pagers lost its life due to an unfortunate toilet accident. The operator then paged the sole surviving pager all night. I got to sleep thanks to my winning strategy at rock-paper-scissors.