Just a note. The Moscow does have a throttle unless someone with a Moscow (both mine are Moscow+) says otherwise. But Leon certainly sells the replacement throttle for it for $25cdn (shipping incl) if it doesn't come with it. @john peck has a standard Moscow, he can confirm if it included a throttle or not.
I think you're right. A video review of the Moscow on Youtube from EBR confirms this thanks. Unfortunately Leon Cycle Canada only has the 26" model in stock which is too small for me, 27.5" is more ideal. I may also look for a used one at the right price and retrofit that with this battery.