Yes I have...checked his website but did not find a model that will constrict into the circular shape. Emailed him over the weekend, still waiting for a reply.Have you tried Lukas Novotny from Saluki Bows? salukibow.com
If you want a Korean one specifically, I'd recommend looking into Korean makers.
Very big money if you do find one.
I'm sure Lukas can make you a Korean style bow like the one pictured with much higher quality.
They're probably not the best bows for travel because they can very in draw weight depending on climate. They're also difficult to brace and can be ruined without proper attention.
A short 3pc wood/glass takedown is ideal for travel or backpacking and can be had quickly for far less $$.
$3000 plus a 2 year wait is a big investment for a true horn bow but it's definitely on my bucket list.