Weddingbee boards

We are currently looking for wedding bands and I'm having a hard time finding one that fits my style but also matches my engagement ring.  My ring is very similar to the emerald one below.  I know a channel setting would match very well, but I want a very sturdy ring, and I don't like that it would be very hard to adjust the size.  I like the look of rounded bands a lot (I really like the one below), but i wasn't sure how it would look again a flat channel setting.  Does anyone have a picture of a flat banded engagement ring along with a rounded wedding band or know whether this would look ok?  Thanks for your help.

I forgot to mention that I don't really like half-eternity bands, even though the would solve one of my problems.  I like the symbolism in the picture I attached  since the diamonds go all the way around but it seems more sturdy than a channel set eternity band.