If your work is printing "happy" or "pleasing" color and especially if you're competing in the low cost market then, IMHO, there is no reason why you can't use an HD TV press-side to guide the press operator. Using soft proofing at press is how many magazines and newspapers operate. Granted they'll be using more sophisticated displays - however the principle is the same. Again, IMHO, today's LCD and LED TVs (e.g. LG and Sony) are up to the job as practical soft proofing alternatives to expensive displays such as Eizo for that class of work.