Yup, the hybrid tips certainly have their place, and I'm glad you gave them a try despite your initial reservations! I first started using them with my TPEOS A200 to increase isolation and make the bass punchier. Since it's a pretty open / airy IEM to begin with, any reduction in soundstage was a good compromise to achieve my goal.
If I had any further info, I'd share with you guys. Right now I just know Forrest is working on a flagship IEM that remains tuneable, makes the tuning process easier, and makes sound even better. I'm looking forward to it!
BTW, just wrapping up my time with the BW S3 and will then make the FLC 8S my testing IEM for the rest of my time with the Cayin N5 and FiiO X7. I honestly can't wait to dig deep into the FLC 8S. The initial listens I've taken are very promising, and the people I've turned it loose on have been extremely impressed. One of them preemptively signed up for the US Tour because he wants to make sure everyone knows about these. He's a hardcore headphone guy who's never purchased an IEM because he hasn't found one that satisfies him before. As soon as he popped in the FLC 8S, he got a smile on his face and said this was the first IEM purchase he'd be making.