After the last announcment of their bronze filament I have been to their website and I must say I have been intrigued.
I'm waiting for their release of the bronze filament to place an order.

In the meantime, if you do receive samples, I'd be interested to know if the parameters they announce on the product sheets are reliable for the PLA/PHA and XT. I'd also be interested to see how the PLA/PHA mix is compared to standard PLA in terms of mechanical resistance / brittleness.