So here's v2. I noticed some damage to the felt. Probably due to abrasion - so this model includes a foil pie tray and a triangular shape with sides.
So far a few things have me a bit worried. On this test, at some points there was an odd smell and the felt was glowing in a similar manner to Char cloth. I suspect whilst fire proof the cloth still undergoes a chemical change. So it's durability may be questionable.
The other noticeable effect was the fire softening the pie tray. It curled in on itself.
The new model is a hefty 52g without suspension.
Photos