Took it into the shop (I didn't have calipers), it was mildly bent. They couldn't fix it on the spot, but managed to ~30 minutes after I had left. I picked it up this morning, have only ridden it the ~2ish miles back from the shop (I also rode it the way there, but that was without a seatpost, so wasn't that representative).
Brief thoughts are:
* Handlebars are narrower than I would like, and I don't particularly like the stock grips (they are too hard --- it might be fine if I wore riding gloves w/ gel padded soles, but I had no gloves on). I was already vaguely planning on switching the handlebars to drops or something, how narrow they are reinforces this decision for me.
* Handlebars are also lower than I would like. I'm 6'4", and was somewhat worried about a 58cm frame (I normally get a 61cm). The bike is a little small, but it's manageable. In particular the seat goes high enough that I get good leg extension --- main issue is with handlebar placement.
* I've only ridden on mostly flat surfaces so far. That being said, I can (somewhat) feel the only single gear choice --- a few times I feel the urge to shift to a higher gear, but that's clearly not an option. I was comfortably getting to ~21ish mph before feeling that though.
That all being said, it's probably fine for my current purposes (mostly groceries, <5 mile trips). I used to commute ~15 miles each way though, and I think it would be the wrong bike for something like that, mainly because I think I would get annoyed being in the saddle of this bike an hour at a time. Swapping out the handlebars might help with that though, but also I don't plan to use this bike for such long trips, so that doesn't really matter to me.