So... I got kind of forced into this plan a couple of weeks ago. I've maintained a European SIM on my dual-SIM phone for a couple of years, recharging it for 15 euro before every trip. In late September I upgraded to the new iPhone, with only allows two e-SIMs. Unlike Apple, Verizon had it in stock, so I bought it outright, pain in full, so that it would be unlocked for foreign SIMs. Prior to the trip I'm just home from, I'd asked the Verizon Chat if my phone was unlocked, and the AI response was crystal clear, my specific phone, on my account, was unlocked. I knew I'd have to go into a store in Spain to get my old SIM carried over to an eSIM, and did exactly that two weeks ago.
But the phone was locked.
Turns out that Verizon locks all phones they sell for the first two months, and apparently there's no way around it. (Well, the way around it would have been to wait an extra week to get my phone from Apple.) I wasn't going to be able to use the Spanish eSIM until the day before I left, and 13 days of "Travel Pass" would have cost me $130. Changing to this new Verizon plan felt like a bit of a bait-and-switch, but it was going to cost me about $15/month, so I changed, figuring I could weigh options after the trip and the phone is unlocked. I walked in the door 10 hours ago, and will put 'reanalize phone plans' on my to-do list.
That's maybe more of a niche rant than you were seeking. I will say that the roaming worked flawlessly while I was traveling and it was nice to not have to fiddle with settings to limit use of one SIM over another.