I grew my pineapple express that way - The only con is she did turn into quite a room hog - But I got a little over 3oz of bud from a 12 week grow - So I'm happy with that, overall height not including the 5 gallon bucket was about 16", she was tied down like crazy though, a spiral all the way around, and all the large branches were pulled out to keep the canopy even.

I currently have 6 more in my box, none are spiraled but they are LST'd (just bent over and tied down) alot less patience, but they seem to be growing just fine - Spiral is cool, but I like putting 2-3 plants in a 5 gallon bucket, and if you spiral them, you won't have a very good time with that many plants