You're going to get shading errors and all kinds of problems with the 3rd example. Try to unwrap it, normal map it and put it in your engine of choice and you'll see.
that shouldn't be aproblem as long as the shading looks good the normal will loke the same, so if you have shading errors get rid of them otherwise it doesn't matter
Just tried to email you and got a bounce. The old "The recipient name is not recognized" error. markd "at" atari.com, right? Should I try to send it to the vigville addy?