Anyone able to confirm that I've been wasting my time, and that its totally fine to have strokes instead of paths for any linework and outlines?
Better safe than sorry. Coming from a print design background, it never hurts to prep your files for the lowest common denominator. When I've sent work over, I make sure everything is expanded/converted from strokes and completely trapped/flattened on the artboard before I consider it "ready."
I'm using a pre-cloud version of Illustrator (which I paid for, full disclosure) and have the Roland Versaworks swatches for anyone who needs them in that version (or older). Like I said, I've been in the print world for a long time, and only even recently got into Affinity's products. I work much faster in the Big Red A's Devil Music programs, so that's where I'll be for the foreseeable future. A first gen Mac Pro sure does lumber along compared to my newer stuff, but such is life.
Also, hello, I haven't posted on this forum, just recently joined to lurk and read some excellent reviews and breakdowns

thanks to pedalpcb for setting it up with XenForo
Recent experience with Tayda time: everything about that experience is lacking in the UX dept. It's good to see so many folks here overcoming the odds

I might repeat some experiences from the last 40 or so pages, so bear with me.
All of the pieces one needs to add (a la carte) are not easily searchable, so it's worth taking one's time to completely do it—something a modern eComm experience has trained us to
not do. I wasted a month of back and forth, because of one missing item, which was less than the minimum purchase order for Tayda. Also doesn't help that you're dealing with two separate domains (and in some ways two separate accounts). Heck, if Tayda paid me, I'd audit the whole eComm experience just to get it comprehensible.
FWIW, they aren't lying when they say they're overloaded. Their support ticket system is… well never once did their side answer anything. It was just me posting updates, and only when I added an additional 3 (because $5 min) UV Gloss cart items did they finally process the last bit of the pedal. The rest of it—drill, cut, base coat, and art—was already done by the time it was flagged as missing the gloss item in my order. Anyhow, TAKE YOUR TIME. The end result, though, was fantastic, and I'll definitely do it again when I've ticked all of the boxes.
Here's my recent job. Also made use of the "lines" option, which is killer for something like this with horizontal slide toggles.
I've done it twice and it's worked good for me.
This is also good to know! I'm planning something along the lines of a bare surface.