There’s an interesting discussion about people’s navigation and communication preferences taking place on Reddit’s r/overlanding subreddit: CB vs HAM, HAM vs GMRS, what kind of mapping solutions like, that kind of thing.
Have a look and weigh in, if you like.
My own two cents is that HAM and GMRS are actually compatible. You can tune them to the same frequency. Just look in your GMRS manual to find what frequency the channels correspond to and you’ll be able to do it. Also make sure that the privacy filter on the GMRS (sometimes called “Interference Eliminator Code”) is set to 0.