it will not be welcome at many airfields due to the noise from those counter rotating props
Contra rotation does not necessarily make it noisy. Highly powerful turboprops and supersonic blade tips are more to blame, neither of which is on the 100P.
Low speed taxi tests with sound available here:
https://www.facebook.com/TheBugatti100pProject (you can access this page without being a member of Facebook)
I always loved that airplane, can't wait to see it fly. The original one never did!