Eric Neff has posted a nice review of his custom Layla IEM on Headphone.guru.
Pros: Adjustable bass means a wide range of uses and personal styles are possible with one pair of CIEM’s
4th order crossover concisely controls the twelve drivers per side.
Perfect frequency phase delivered by three independent steel tubed bores.
Impeccable fit and finish. Custom fit was perfect as received!
Cons: Price. $2195 in my version is the low end. They scale up with materials options to nearly $3k
Cable is thicker to accommodate the bass adjust. Some people may prefer a thinner option.
No iPhone controls or microphone available at this time.