I like it, much more so than an 'orrible cheap looking black plastic job, but I would be concerned about the effect of water on many other systems long before the air intake on a standard T6 was flooded.
As I've yet to see anyone drive a T4/5/6 through anything like enough water to merit a snorkel, and I have no intention of doing so with mine, I dare say much of the discussion is immaterial and the choice very much subjective based on blinging yer wagon.
I had a snorkel on my Landy, forded many rivers, etc, but probably never got it to the point where it would have worried the standard intake. I would guess that the T6 would flounder in less than the Towrag could manage, regardless of breathing problems:
Either way, the most I ever expect to encounter is wheel-high wading: