I used to travel extensively, usually between the same cities - NYC, Austin, Las Vegas, Nashville, LA, Dayton - and the CloseCall feature has always been a valuable tool when monitoring whatever hotel/motel I was staying at. Maintenance, Housekeeping, Security, Front Desk, etc, I could hear them all and knew when something major was going on. Nowdays most hotels are DMR and not as easy to monitor as they used to be. You can hear some hilarious things when the staff is discussing the residents.
I traveled with both SDS100 and TRX-1 and I have to agree that I got more hits and generally heard more CloseCall (Spectrum Sweep) on the Whistler TRX-1 than on the SDS100.
Close Call is a riot at most truckstops. I tapped into an undercover prostitution sting at a TA just outside Houston one night on 173.something and I laughed so hard I darn near had to change my britches.