I was just about to get this!! But aftermarket!
Thanks for the Losi link, i will get my LHS to order one for me.
I HATE roto start for everyday use, I like to just thow a glow igniter in my back pocket and a bottle of fuel in the other and go out..
The roto is so freaking heavy and BIG, it pulls my pants down wearing that thing in a pocket.

I longed for my old pull start savage.

Now HOWEVER, the roto start is VERY nice when dealing with a troublesome engine.
If you are so out of tune it won't start, or something else is wrong, it's VERY nice to have roto..

But when you just rolled it, and it stalled, it's SO nice to just give it a tug and get back on the dirt!