The general consensus is that your 250 will be too underpowered for anything other than trails.
The 2moto is the least durable and capable of the snow bike kits.
The snow bikes in general are not great cruisers but are a blast for boondocking.
They guzzle gas.
It is a quick transition, but the snow bikes don't steer like a wheel bike. They are still more fun than a sled.
Of course, I've never ridden one, like most other people who will offer their opinions. I do have a SnowHawk 500, which is also built by AD Boivin and I play a doctor on tv, so my useless opinion may carry more weight than some others.
Regards,
Mr. BigWheel