I agree with you, I think the subtle outward flare of the watch band where it connects to the watch is what makes it seem more harmonious. The straight appearance of the moto band makes it look cheap and like you said "an afterthought".
That same look is reminiscent of watches by Xetum, which are decent entry-level Swiss watches. (Made in the USA, but Swiss movements).
Oh, and I have a Mondaine face for my 360, in addition to faces that match my Navitimer 01 and Sinn 756