Thanks for all the replies. I have a older Sturmey Archer that, believe it or not, I was thinking of replacing with the Shimano Nexus. I have three gripes with the old S-A and they are that there is a neutral position, there is a lot of take up when I resume pedaling and I need to run the cable to a pulley.
I tried a Nexus 3 speed on a rental bike and it was pretty good. Perhaps the only good thing about the bike itself. That is another topic.
Good point about the rotary shifter taking up space. It is one of the reasons that I am looking for an IGH. I would prefer to keep dish to a minimum.