If you "truly" want to go back in time I suggest getting one of those split screens. CLICK HERE!
Just like in the good old days. I have one of those and it works pretty good. However, if you use a modern AF lens with a screen like this, spot metering will be 100% unreliable.
1: I use Spot Metering almost never, so I'm cool with that.
2: Katzeye doesn't make one for the 5d2. Serious facepalm. I mentioned this in my other thread which didn't give me too many answers.
The other option is the Lux approach, which I'm debating.