Dave, I've used the "waterproof" panel boards for many, many, years without any issues in the long term. I like gluing multiple pieces together to hold the curve of the door, when needed. I've had clients return years later, for other work, and haven't seen any warping at all.
But I always glue on a watershield to the door, just to be safe.

Similarly, the term "Eco-Friendly Leather" bugs the crap out of me.. it's not leather, and it's not Eco-Friendly!! It's Vinyl.. made from chemicals... in a big stinky processing facility!!

But also, the very old term (I've been a trimmer a LONG time) "Tuck and Roll" makes me laugh every time an old timer comes in asking for it. I always ask them to explain exactly what they mean by that.. (I know what they're referring to, but it's fun to hear them try to figure out what it actually is) .. to me, it's what I'm gonna need to do out the passengers seat when my buddy is about to drive off the road.

I agree Hal, a discount to get square sends the wrong message.... unless, as you said, you're ready to cut ties.