I think you just answered your own question!
Over here the "freebacker" type (Auto reverse if you are looking at UK sites) have been the only type you are allowed to use over here for a while. Not so much for the "pain in the rear" reasons you quite correctly cite, but it means that in emergency situations you can back the rig up without the faff & time of getting out, possibly to be killed by the next passing vehicle.
"standard" brakes can also be accidentally left in reverse mode, the sort of mistake you only usually make once! (don't ask me how I know......
Only "downside" (if it even counts as one) is they are a bit more of a fiddle to set up.
Another plus for you is as you have them on your sailboat trailer, it might be possible to standardise on spares...