Randy makes some very good points and I'll just add to this from my practical experience. First of all, a lot of hospitals now are going to or even requiring nurses and anyone else who wears something around your neck to use breakaway lanyards. This isn't just for safety in psyc where I am, but anyone can grab onto something like that around your neck and choke you. Even an elderly demented patient might do that, totally unintentionally. So I'd question someone being able to use this type of pen in a healthcare setting. At best, you'd probably have to switch out the lanyard/cord part for something breakaway. This is a safety issue that's becoming more of a focus in healthcare settings. And even if your hospital still lets you use the non-breakaway kind, for your own personal safety, if it were me, I'd switch- and have even though where I work now doesn't require it.
Second of all, having worked with lots of drug reps, both that have come to places where I worked and also for some contracting work I did until my most recent <s>flight</s>, uh, make that move, I know that pens like this are usually not a hot item. Some companies do make their promotional items to include pens on a string/lanyard, but they're just not as popular as you might think. I think probably some of the reasons are for what Randy describes, the hassle of having to unscrew it.
I'm certainly not doubting the experiences some of you have had with people wanting them, but I tend to think Randy may be right and they may be more of a gimmick... That being said, I do have to admit I have some kits myself![
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