I got the nahaulon from FT. Just sharing my impressions.
The external air flow hole is not well drilled - the airflow is extremely tight on my piece.
The chamber is reduced in the nahaulon for a more intense experience , i suppose - but it makes fitting the top cap rather difficult - a slight misalignment can cause the cop cap chamber to touch the coil and cause a short - rather dangerous to use with a mech. The top cap is also extremely tight to remove - i believe these issues are there in the original also. Also the liquid tank is SS which means you cannot see the juice level.
Overall, my initial impression is that its a rather badly designed genny.
Unless i get amazing flavour off this one , i dont see any reason why this cannot be called a faulty design, in my book