Iso Shield in the stead of treatment?

To put this whole issue simply- is it possible to use an isolation shield as a (maybe temporary) 'replacement' for room treatment? I mean I realize that nothing will replace a good room, but in a pinch, or for those who can't afford it, is it possible to opt for maybe Monoprice's really cheap iso shield and save $750?

Definitely go the DIY route. It'll save you money, and you won't be nearly as disappointed.

one person's experience...
 
I'm not a big fan of the mini isolation shields. I don't like the resulting sound quality. I have spent some time with two different models, from two different manufacturers, and a third that I put together for myself with a music stand and some spare Sonex panels (yeah, really ugly!!!)

For voice-over work any of the three is ok for most voices, and with really careful microphone selection, and placement, the right voice, and a little bit of luck they can be very good.

For everything else I tried (Acoustic guitars, hand percussion, solo strings, brass, and winds) I was disappointed with the results. I get much better - to my musical tastes - results using plain old gobos. Yeah, they are large, and a pain to place, but they just work better for me.

I really hope that someone, someday, makes me eat my words!