Using “silent” electronic shutter has proven to be a really useful feature. It enables one to use the fastest possible drive speed of 20 fps (🖤H+) which is a real boon for me as I shoot a lot of handheld HDR. It also enables a higher maximum shutter speed of 1/16000 of a second (1/32000 of a second on some models of Olympus cameras) which is great for shooting in very bright light without having to stop down more than I want, assuming that’s an option or mucking about fitting an ND filter. It also saves a lot of wear on the mechanical shutter. I know that it has certain limitations but I don’t habitually shoot fast action or in artificial light or with flash so it’s great for my type of work and, of course, it’s “silent”. 🙂
If your camera has this feature I thoroughly recommend that you give it a try if you haven’t already. I think that this is the way of the future.