FWIW - I used to run a Wren Mk2 with no FOD screen and it ingested something and Wren repaired it and suggested I fit a FOD screen which I did - with no loss of performance.

I now run a Wren Supersport which isnt available without a FOD screen - its built in to the price.

To suggest that all turbine manufacturers dont care is clear evidence to me that the person saying that hasnt done business with Wren.

A more caring company you would look very hard to find.

I have no connection with Wren except as a very satisfied customer - past and present.