I guess this belongs here since the BM4K body is the same as the BMCC...
Here's the rig i've been using lately with the 4K body (used it on the music video using all 3 BMD cams posted recently). Mostly the new redrock cage and other bits of theirs which i'm REALLY liking! Before you ask, yes i'm left handed and have the pan handle that side, and it's tilted up because i had the camera in "low mode".
I have the monitor arm placed like this into the redrock monitor socket/arm so that i have more flexibility with monitor position, and when going to shoulder rig i have another point to insert the monitor arm into which makes swapping much faster. Currently its set so going from one to the other requires no change in the monitor arm to be positioned where i like for shoulder rig or tripod operating.
LOVE the cable management clips from redrock, i have 4 of these all around the rig. SO good. I was using velcro before but these are much faster and convenient when changing things around.
Also using the new redrock follow focus which has hard stops, and the marking point can be rotated and repositioned too.
As with my old rig where i had long arms, i'm using the new long redrock arms/hand grips. I like that the length keeps my elbows at 90 degrees and operating all day is much easier for me like this.
Front view; here you can see where the monitor arm gets inserted when switching to shoulder rig and you can see i'm still using the redrock offset mount like my last rig so that the arms are central to my body:
The redrock shoulder pad is on a manfrotto plate so i can slide the camera rig off the tripod, and slip the shoulder pad on and go straight on to my shoulders.
So going from tripod to shoulder is a case of moving the monitor, sliding on the arms/offset to the bottom rods, removing from tripod and sliding on shoulder pad. Not too bad, but i'm constantly trying to figure out how to make changes faster.
Sorry for all the pics! Really happy with the setup at the moment tho, i think the new redrock stuff looks and feels great. The cage is sturdy and the top handle and arm grips are actually more comfortable to me than my zacuto ones. I think the next piece on my wishlist is the microremote so i don't have to lift my arm to the follow focus, and to make it complete i'd love a Bright Tangerine mattebox to replace my old Shoot35 one!