Thoughts on the Perixx ergo mechanical keyboards?

I recently came across the Perixx PERIBOARD 335 and 535 keyboards. These are split, low profile, and have tenting and negative tilt. They are cheap too (around 100 $/€).

EU: Perixx ERGO Mechanical Keyboard - PERIBOARD-535 Full-Size or PERIBOARD – Perixx Europe

US: Perixx ERGO Mechanical Keyboard - PERIBOARD-535 Full-Size or PERIBOARD – Perixx USA

I’ve been looking for something like this for a while now, and I’m looking forward to some reviews coming out!

What do others think?