If you haven't stumbled into the information, be aware that the stealth mode can be added to models not featuring the mode. There is a sequence of button pressing (not intuitive and you need the script to follow). It worked perfectly on mine and the mode was handy on a couple of occasions. I was always happy with the photographic results. Initial orientation time spent is important as the control systems are somewhat unique. I found that I had time gaps in using the camera for the duties I used it for and always felt a bit fumbly when I'd pick it up again.... I let it go in a weak moment and now regret not having it.
I may have a copy of the stealth script (once the body is programed, the mode is always there to select) so if you don't find it on the net, let me know and I'll do some digging here.