consider an interior wall made of 2 by 4 construction and 1/2 inch drywall, plus casings. total width of this opening will be 5-6 inches. Consider an 8 inch wide panel falling in a location that would require a portion of the panel on either side of the wall. You now have to create a baord with a "u-shaped" cut out on either end if the floor is to flow throw the opening. Awkward to say the least.

A dailey scenario. Been doing that for years, dont think twice about it.

IMHO installing a t-moulding , just to avoid that scenario is an eye sore. If the t-mould is required, that's another story.

Most of the products we work with suggest that the T-mould IS necessary at all doorways. therefore.......

That's tough to digest

Notice I'm home on a thursday ?

When can I start

Say you have a large family room that then goes down a hall then goes into a bedroom. if the whole floor is expanding and contracting a a whole as a floating floor is said to do the large family room will move the small bedroom around and the doorway is the weak spot. I usually try and talk my customers into the T-molding. If they don't want it I try and explain what can happen and they will be responsible for repairs if needed. On another note if you install the T-molding as required you can't get in trouble for following the rules but if you don't use one and there is a problem then your the expert and should have known better.

Dennis, you made that up LOL How often do I work with wood that spans a 5-6 ich doorway.

Most of these laminate crappy products we work with are around 8 inches wide, and it is these that most require relief points as often as possible.
When someone wants us to install some $1 - $2 a foot junk, I dont feel the need to get creative on how I address doorways. I just follow the rules.
When I'm working with a $8 - $9 a foot product, I feel the client deserves more attention to detail.
I know that doesn't sound right but cant figure out how else to put it. I dont mean to imply that I don't care about ALL our clients but working on small margins like we all have to do these days; requires that some installations cant receive all the creative potential of our crews.

We're talking about engineered click

Me too, but not exclusively.