I agree that Tonneau cases have been around for a while pre-RM. Franck Mueller probably popularized the case design more than most. But I really became enamored with the ultra modern aesthetic when RM launched its famous original “Racing Machine on the Wrist” campaign with the RM001 and RM004 ads. So hence my first foray with the RM005 - which I enjoyed very much.
Comparing what I remember of wearing the RM011 - there are certainly similarities. In fact when I tried on the 45mm Hublot Spirit it felt very similar - but what RM does a better job with the RM011 is that the caseback curvature was more comfortable on my wrist. The only issue on both watches was the “projection” or height of the watch - much “taller” than my AP 44mm, my Panerai 47mm, and easy for me to bang it on a wall.
With the 42mm Hublot it’s a much more comfortable set of dimensions. Feels more similar to the RM010 and less than the AP. YMMV of course - but I have been pleased so far with the lightness if the watch (I need to weight it at some point).
More impressions to come...