Better or Worse? Is this new filament worth it?

Is PLA with a core of PETG an advancement in filament technology, or just the latest fad? Stronghero3D and some other companies have recently released filament combining PLA with a core of PETG. What benefits are there from this new melding of materials and are there...

Gimmick or Feature!? PLA filament with PETG core

Stronghero3D Shadow Series PLA w/ PETG Core (Affiliate Links) Shadow Purple Mirror Chrome Glitter Blue Purple Black Burnt Titanium Blue Purple Black Matte Rock Yellow Brown Red Black Multicolor Wood...