I can testify that this is a great farming base as well as a decent trophy base. I used it to reach Master league (peaked at 2630 trophies) in the recent Centum clan family push.
http://i43.tinypic.com/2yv52xk.png
Any TH9 is a prime target for all the TH10s up there, so from 2500-2630 my record on defence was only 7 wins from 22 attacks in 5 days. I'm really not sure how much more effective i would have been with a pure trophy layout with TH9 defenses, but i found the funneling to be very susceptible to GoWiPe.
I'm now back down in gold farming range and just switched to the "exposed elixir" version since I've completed all my elixir building and lab upgrades. Keeping the TH inside for now to see if i earn some defensive wins.
One thing I did love about this base was how often the big bomb placement really messed with a few attacks. Here was my favourite, wiping out 15 witches when triggered by a skeleton. This guy must have been ♥♥♥♥♥♥! :D
http://youtu.be/K7ejstfX3Bg
Thanks maynard for this great design!!
BTW, I used BAM to 2000 cups then balloons & minions to 2630.