Both Digi and The_Guest have good points. Intelligent lighting fixtures such as Mac 2ks are popular in the theater world and are used, and really aren't extremely noisy.
ETC just strapped a
source four onto a moving
yoke. I am not sure on pricing, but if prices compare with other intelligent fixtures, I would pick them over the ETC source four revolution. The nice thing about the revolution is that the it takes a normal 750
watt lamp, like the ones used in the source four. That may be seen as a disadvantage to some people, because it may not be as bright as some other intell. fixtures.
I wouldn't want a source four revolution because it doesn't have as much flexability as other intells. I wouldn't want to be changing the modules often to get different effects that I desire.
As The_Guest stated this would be of more use in a theatrical setting, so as far as theater I would say YES, but when it comes to concert touring NO.