took some pics of the 2 30l's that came in today. The build quality appears good overall. The fermenter is thick rigid plastic (more stiff than a better bottle) and all the bits and pieces are made of "quality plastic" (no thin brittle pieces like regular airlock plastic).
the handles appear plenty sturdy enough.
this airlock is giant.
the orange airlock top does not clip into place. There is a fill line about 25% of the way up there airlock, and the orange top just kinda floats on the water and will bob up and down as gas escapes.
screw on the top cap to shake/airate.
the airlock stem is ~5/8", so even if krauzen made it up that high it looks like it is plenty wide enough to not plug.
bottom bung can accept the included spigot or cap. I didnt measure, but it appears to be 1.5" - 2" higher than bottom of the fermenter. I would not expect much trub to make it out unless you have a giant yeast cake and 2lbs of hops.