This was looking interesting to me until I checked the weight, quite a bit more than the RockN Roller.
Weight  49 lbs 
Thanks Donny and to all who post new equipment info, reviews etc. 
Scott do you use a R10 now? 
No, Donny, I'm using a double decker AV cart.  It works great for me.  I put the speakers on the bottom shelf and everything else on the top cart and off I go in one trip.
It's such that if needed I can set up my speakers on the bottom and place my keyboard on the top and plug and play.  I had this set up a few years ago when I was playing a place where I started outside at the front entrance and half-way through the gig I would move to the back of the club inside.