Actually if you check the footage released so far I am surprised at pretty minimum distortion when paired with 20mm and 14mm
https://vimeo.com/67562461
Wide angle lens is not a problem consider there is plenty of super 16mm/cctv lens to use, and native M43 ultra wide lens is still pretty wide on BMPCC.
14mm + VCL-ECU1 which gives you 10.5mm, which is about 31.5mm, and 7-14mm equate to 21mm ~ 42mm or 9-18mm equate to 27mm to 54mm
Btw if you are shooting raw you need a couple of 64GB 90MB/s card which cost more than $100 each, and you also need to buy really big HDD as they chew TBs of data like nothing.
For me I actually gonna drop on this gear chase syndrome, after talking with my fellow friends who is really good videographer, he has done some pretty amazing stuff with his 550D and 50mm f1.8. He tend to spend lots of time on thinking how to shoot instead of looking at gears.. unlike me lol