Initially the breather did mist some oil from the breather filter, but apparently the engine is slightly overfilled from new. I however did move the filter down near the chain via some silicone hose, so any oil mist goes towards the chain.
The tubes do loose pressure, but I added puncture repair liquid, which seems to stop this.
I did purchase the lower fork guards when they first came out and the quality was good,maybe later ones were less so.
I agree that a slim full length chain guard in carbon fibre would be welcome and prevent excess fling from the chain.
One point for me is that the exhaust note is too loud and slightly annoying over distance, even with ear plugs! Maybe some form of adjustable/removeable baffling would solve this.