I am familiar with the locator beacons, They are for emergency use only and send a sos to an orbiting satellite and include your gps location. You pay for the rescue effort (can be thousands of dollars before your helicopter ride).
Those locators (ACR brand is what I am familiar with) are not...
A leather pocket holster conceals as well as those synthetics and are more compact and easier to use when wearing jeans. I made mine from 10 oz skirting leather. May have scived it down a bit don't remember as I made it 5 years ago.