Electronic whistles

[9thIsleZebra]

I have a few questions regarding the use of electronic whistles. First off I have the Fox 40 model with 3 tones. It looks somewhat bulky and it comes with a wrist loop lanyard. I thought about attaching it to my belt but it will just swing around while I'm running. Then I thought about holding it in my hand but the danger here is tendency to "blow" an inadvertent whistle. I was watching a few college games over the weekend and it appears that those officials that are using these whistles have it on their belt in what looks like some type of carrying case. If anyone out there is using these, I'd like to hear your experiences, good or bad. Thank you.