I love them but yes they will fall apart. The neoprene will rip and tear.

When mine start to tear up I buy a new pair and continue using the old ones anytime I don't need 100% waterproof.

I also use my old ones with my soft foot waders.

They are very comfy for me but no they are not indestructible and no where near as tough as an old pair of northerners or Lacrosse etc. They are not really that warm either but good enough if you are on the move. As I'm sure you already know rubber boots are just not really ideal for sitting still.

Ive been thinking about trying the Xtratuf brand as I believe they have the comfortable neoprene inside and still have the rubber exterior.

The neoprene well its neoprene just like any other neoprene that I'm sure you have used. It doesn't handle snags very well but can be reasonably patched with goop etc.

I do prefer the fieldblazers like the ones you have pictured above.

I'll get you a pic tomorrow of what mine look like after a few years of hard use.