I have the baby brother to Ilan's scope: a NMT 12.5" f4.5. I've been very happy with it, and frequently take it up to Skyline Drive here in Virginia.
With respect to JimV's comment, I had Ryan place the focuser further towards the tube's top side. But while looking down is easier on my neck, it comes with a price: I have to engage the focuser lock screw a bit more than I'd like.
With respect to Ilan's special box to transport the top ring in, I too, made up a box to do this at first. But then I had Ryan make up some mounting brackets to hold the ring in place about 7" above the mirror box using the truss frame bolts on both the mirror box and the ring. This saves room in the car while keeping the ring rigidly mounted above the mirror box and out of harm's way.
I stopped using that special box... took a small bucket, big enough to accommodate the entire secondary mirror with an inch to spare, did four notches for the spider limbs, placed it on top and tied gently with a string.
This way I put it on top of the mirror box during drive - bucketed mirror pointing up. saves huge amount of space and very secure.
The mounting brackets sounds like a good idea, care to share an image?
Regarding the focuser position, when considering the forward placement of tablet stalk which is the one I prefer, having the focuser backwards would have prevented me from using it properly, so all in all, it does its job