Well I personally have never seen an cabinet/furniture builder stain then assemble.
If you have ever watched Norm Abrams on TV building all his stuff he glues, tacks , wipes excess glue and lets dry. Then sand, stain and clearcoat.
To assemble a project for fit, then take it apart to finish all sides is twice the work and unnecessary.
Stain has solvents in it that can react to the glue and eventually cause the joint to become loose.
What may seem to work for some people may be ok for awhile, but will it be 2,5,10 years from now.
Do some research across the net to get some facts, cause what might work for 1 person may not work for you.
Here is a good link to get you started
http://www.popularmechanics.com/home_improvement/furniture/1273086.html?page=3&c=y