You know, the downsides you mention are the primary reason I haven't bought a drysuit. My wetsuit is adequate. I don't like it but it is adequate.
The whole idea of turning upside down (and, yes, I know how to recover - at least in theory) just has me thinking the whole drysuit idea just isn't worth the hassle. Huge air bubbles migrating all over the place...
Now I have another inflator hose, a dump valve to position, put in enough air to eliminate the squeeze, be sure to vent the air before rocketing to the surface, diddle with the air in the wing, carry even more ballast... All this seems like just too much effort.
It's clear that drysuit users like them. If I spent that much money, I would claim to like them too!
But I KNOW I like diving in warm water. I can't come up with one good thing to say about diving in cold water other than "well, it's diving, kind of".
Take the vacation. Drysuits will always be around.
Richard