I’m using his HF Bands Preselector, it is a long red board…
The design is good and the component choices give a good filter cut off profile, the pass bands are decent with pretty low attenuation.
My only complaint is the board choice, it is rather thin so that centre mount hole really does need a stand off under it as well for anything portable.
Performance wise it does the job, out of band images are knocked down effectively and the noise floor drops bringing the signals I want out of the mud.
I was thinking of giving some of his other designs a go as well, they aren’t expensive and can be used in front of my tube rigs if they aren’t up to SDR standards.