Neat idea, but I probably wouldn't get one. There are a few problems for me with it.
-When I enter someplace, I take my jacket off and I don't want to be leaving my gun on a chair or something or pulling a gun out to re-position it.
-It doesn't mention or look like it has any extra support to keep the one side from hanging further than the other so it'd look like you were carrying something heavy on that one side
I have a 511 tactical concealment undershirt and it addresses the issue by reinforcing the shirt. It essentially sews on a holster that hugs your body to stop it from hanging down from the weight but that coat looks like it just dangles from the pocket area. I may be completely wrong, but it doesn't look like you'd be concealing very well. They probably wouldn't suspect gun right away, but they'd definitely notice something was there if you wore anything with some heft to it.