Hi TinyBear, I see you're getting advice over at the EBR (Expensive Bike Ramblings). forum.
If you're looking to spend $1900CDN on a fat tire bike, I'd suggest you try and compare them to the regular tire bikes.I own two fat tire ebikes, neither very expensive, but since I can't transport either to the beach and don't care much for snow, I find them of limited appeal compared to a regular tire ebike. It's like SUV vs sedans. I like the SUV, but when I go into the city, I sure like parking my sedan a lot better.

Throttles are good to have. I did rig up my fatbike with a one wheel hitch hiker. The bikes are almost 100 pounds. I'm 200 at the moment. That's 340 pounds with the little kid Starting off from a dead stop, I'd almost fall over or get a hernia if I had to downshift to the lowest gear and stand on the pedals. Nice to get an easy start with the throttle.