I usually use my ETRSi with a WLF, which is usually fine becasue 95% of my shots are landscape, and the other 5% I can still shoot in portrait but it is slow. But I'll be traveling with other in a few months, so I wanted to figure out a way to shoot this without gong to overboard on weight and bulk. I already had a prism finder, but shooting the camera with a prism finder and no grip, is really awkward. So I picked up an ETR pistol grip (I already had a right hand grip but it maes the camera very bulky) so:
tried that out and its a bit heavy to carry in your hand, but shooting with an AE prism was actually quite nice, quick and easy. Unfortunately it made the normal neck strap awkward. I was looking through possibilities, and saw this Blackrapid strap:
It attaches to the 1/4-20 tripod mount, which the grip has on its base. The strap just arrived today, and with a test fitting it actually seems to work perfectly with the camera and grip essentially hanging upside down. I'll give it a full test run this weekend. This setup needs the left hand version which rests on the right shoulder and left hip, since the grip is designed for the left hand. The challenge in the field is also carrying a shoulder bag with other lenses, film, etc. We'll see.