I do sort of miss having a separate device for work, that work paid for, and that I could turn off when not on call. The two way pagers with the qwerty keyboard were pretty nice.
This is the only way I'll ever allow work things on my phone.
The modern equivalent of this is a Blackberry device. My employer provides work phones (a mix of iDevices, Samsung garbage, and blackberries) and even though I think the BB10 OS was a total failure as a consumer product, for a work device where I had no desire for Snapchat or whatever, my old BlackBerry was perfect.
All I need in a work phone is a solid email/SMS platform and my employer-provided iPhone X is way overpowered for that use case.
If it's still an option, I'd be amazed you don't take it. I still have and love my Q10, but Wire has upped their minimum API level to 5.0 (above the runtime RIM shipped).
Especially when you have a dual-sim phone
There's a lot of things you can't easily buy in the US, but it's not because of some grand conspiracy, it's because American consumers wouldn't buy enough of those things to make it profitable to sell them. PC computers pre-loaded with Linux is one example (it's been tried, multiple times). Another example is "washlet" toilet seats, which almost every toilet in Japan is outfitted with. They were invented in the US, but good luck buying one here, though any appliance store in Japan will have them. They don't sell them in America because almost no one would buy them, because Americans just aren't as hygienic as Japanese.
I do get it's probably a bit of real and a bit of nostalgia.