I have two plans built semi scale planes that I fly at IMMA meets, A Tiger Moth and A Boeing F4B-2 done as the Army P-12. In A word BORING!!!!!!!! These aren't full scale but never the less I put in A lot of time and effort for the semi scale look. I don't fly them nearly as often as my other planes because of the size and they tend to put me to sleep. At the shows people love them and like to know the history and love to see them in the air but other then that I always take out something else to the field for normal flying.
I do plan on building A MIG-3 for my next big project but more then just the cool looking plane they are much more exciting to fly and can be stunted. Again, it will be A semi scale, most people love to look at the full scale planes but at 15 feet who can tell. In the air no one really cares too much as long as it looks real.
Some people just love to see how close to the real thing they can get and I love to look at there planes too but it's just more work then I want to put into something then maybe see it die, been known to happen, I lost 8 months of work just this last year. JMHO