I have a pouch on my hip with a 3 stop, 6 stop and 7 & 2/3 stop NDs that I use for all my professional work. All my filters and lenses have Xume magnetic adapters on so I can quick draw 😃
I've been using m43 cameras (and now S Series too) for 10+ years. At first I used vNDs but I found they regularly caused image artefacts in different lighting situations which wasn't acceptable so when the Xume adapters came to market I quickly switched to fixed NDs. I'm pretty fast even for run and gun assignments, and used to quickly dialling in aperture/ISO to bridge the gaps in my NDs.
However, I really do want a cinema camera that has NDs built in now. The Canon C70 and Sony FX6 are well thought out and very tempting small cinema cameras. However, I'm hoping the Panasonic team have something up their sleeve. I'd say the three main things keeping me in the Panasonic camp for now are:
1) Trust in these small, bullet proof cameras in any professional environment (studio running for hours, middle of a field getting drenched by rain etc.)
2) A solid, sensible priced B Cam option (S1 and GH5s my current combo)
3) Panasonic's approach to firmware updates and giving customers all they can. No other manufacturer comes close!!
Regarding putting NDs in small bodies, I have thought before that putting a single 3 or 4 stop ND on the grip side that you could activate would be awesome. 3/4 stops is a very handy amount of ND for most situations!
Good interview, Andrew!