As sad as I am to say it, unless you are doing simple RGB web graphics in Photo, it's not a realistic solution to make the switch (especially with Designer) even with v2.
I have been in a terrible bind with a client where I created their logo in Designer—nothing but a couple of fairly simple paths and one font. But no matter what vector format I try to export to, they are unusable by any other app. I get client requests all of the time for vector formats they can send to vendors, and none of them work for any vendors. EPS is tiny, blurred, and rasterized. PDF, flattened and not helpful. SVG completely broken and three layers are turned into 21 layers and won't open anywhere. TIFF, flattened rasterized. I at least expected PSD to work even if it will annoy those expected vectors... but nope, not even PSD (!) it's flattened, rasterized, and shrunk down a worthless blur. Of course, PNG and JPG are fantastic and easy, but anything with layers or vector maps are completely useless after export.
And it's not one setting here or there, I have literally spent hours and hours doing nothing but exporting with every single combination possible during export for each format. After much frustration and many apologies over months... I have angrily returned to Adobe and rebuilt the exact same logo in Illustrator. Presto, no problem. Everyone gets the files they need, everything works perfectly.
I love the idea of Affinity, and I was thrilled to support them in their no subscription mission. Photo is a nice tool for a casual web dev, but it's not an Adobe replacement for a designer.