I didn't watch the video. I have 2 GPS units. This one and the RM overdryve 8. I use the Garmin when I'm oversize specifically for this feature so I'm familiar with it. Heck, I bought it just for that feature.
I didn't know it had this feature when i bought it. My old dezl was in need of an upgrade so i picked this unit up. the smartphone link app is why i bought a second garmin. However this feature was icing on the cake. absolutely love it. I confirm against my atlas, however not much you can do when permitted. I have never used the rm units but have heard many drivers that have issues with them.