I drove out to West Chester yesterday, but I’ve not bothered looking up and adding repeaters for the area. Instead, I could set the spectrum analyzer on the UV-K6 (or K5) to scan the 145MHz-148MHz, stepping on 5.00kHz, and I had a pretty good picture of any repeaters to hear out there.
Once I heard something, I could pop open RepeaterBook on my phone and see what it was, but it saved me lots of trouble programming anything into the radio ahead of time to not necessarily need it.