Personally I think it looks great especially in the two-tone silver.
To anyone considering buying any of the Ef-m cameras my advice is go and try holding one - I think it will be a pleasant surprise. They are both smaller than you expect but also more comfortable than you expect and have a very high quality feel. Not an easy thing to pull off.
I think it's why Canon went with a separate mount for crop sensors. With mirrorless it allows them to really make things smaller over the RF mount. With SLRs it probably wouldn't have made sense to have two different mounts and also in the days before high density full frame sensors there really was a market for cameras like the 7D for birders. However increasingly those photographers will want full frame and crop as needed.
Going forward I think we'll see Ef-S disappear in the coming years and the main consumer cameras Canon offers be Ef-m. They are small, light, have some great lenses, work flawlessly with the Ef glass and have ever improving autofocus - all things that will appeal to the average user. They also have ergonomics that will appeal to consumers.
For me it's such a nice travel camera to have, the 22mm lens means I can take it out on evening meals, the 11-22 is a great lens and small and the 55-200 strikes a nice balance, going for a small aperture at the long end to keep it small. Unlike some other crop systems it works out to a kit a lot smaller than for example using the Sony A7 system and makes virtue of the crop sensor. My only complaint is some of the lenses being made in Taiwan though that's still vastly preferable for all sorts of quality and moral reasons than China. The M5 is made in Japan, I wonder if the M6 II will be.