Yep, I like the batteries on one side too. Plus, when I decide to get lipos eventually, I can get one pack instead of dealing with two. However, I went with the single speed tranny so I can have reverse and motor braking. You can see some pics in the BL conversion link in my sing, or see the
whole buildup in the Revo section.
I've done the saddle pack route as well, but like the current one much better. And Mike's nitro conversion motor mount is VERY nice.