Nope but its interesting. =0) Heard of a company that makes seamless glass tanks with curved corners but didn't know the site or name.
Word of caution, the curved corners look cool but looking through them or anywhere within a inch or 2 from the end of the bend of the corner sucks. It really distorts things. More of a show off piece for the tank itself than getting a tank to set up that you will enjoy.
i was thiking of downgrading from my 50g to something in the 25g size...i was thinking of getting a custom 24x16x18 tank...but still researching pricing and a way to pickup...4fishtank was one of my options i was looking at.