Affinity Designer does not have a displacement map function (to warp your graphic). But all other mockup features work.
Affinity Photo, however, DOES have a displacement map function. It works best if you apply it to your graphic with a subtle amount of warping.
The Adobe Illustrator AI versions of the templates can be opened in CorelDraw. This applies to all of my men's & women's apparel mockup templates, except for Apparel Mockup Templates Variety Collection (because they are Photoshop only).
All mockup features work, except for the displacement map warping. CorelDraw has a displacement map feature, but I haven't been able to get reliable enough results to recommend this feature.
If you are interested in apparel mockup templates, I recommend ordering the Men's and Women's All-In-One Bundles: