This is wildly helpful! I have been trying to find a shirt to use for my shop and have spent way too much money getting examples in. You explained this perfectly and I love the shirt! Printify has the shirt in some heather colors, fwiw.
I think that white outline is from the way the art prints. I had transparency in one of my designs for whatever reason and what was supposed to be black ink on a green shirt ended up being this weird silver and black two tone design...
Thanks for this review, I’m wondering if you remember which print distributor you used for the shirt? I’ve seen good reviews of monster digital and swift pod