I see it as a minor inconvenience really. When I get my 536's, they will be mounted in the center console of the car, hidden from view and the Arizona sun. One will be set to scan all the valley's FD stuff, and the other PD. In most cases, I'll set the radios to scan and leave them alone, so where the knobs are isn't that big of a deal to me. Most of the time the center console will remain closed. It may seem a bit odd to us where the knob is, but probably not to the Japanese engineers that designed the radio. For them, the knob IS on the correct side for being mounted in a dash. They can't help it if we Americans drive on the wrong side of the road.
I am also baffled by the statements from others that say the 436HP isn't sensitive enough. It sure seems to be for me! I too thought that maybe there was something wrong when I wasn't picking up the airport that's literally less than 5 miles away from my house, but that was before I discovered that you have to turn on the relevant Service Types before you can hear any of that stuff. Now that I have the correct service types enabled, this scanner outperforms every other radio in the house! Hard to say what might be the cause of this problem for others, but I don't think it's the scanner. I'd like to see a side by side video showing this problem - perhaps that would give us some clues so we can help those folks.
-AZ