I ended up running tubeless for the race using ardent 2.4 tires front and rear. The front wheel was a non tubless DT Swiss that I ghettofied using a Bonti rim strip designed for tubeless.... The rear was a Stans no tubes Arch rim since I tacoed the old DT Swiss rim. I learned that the caffe latex stuff didn't work as well as the Stans, so I eventually used Stans for the setup after struggling with caffe latex for weeks.
Maybe I got lucky, but I didn't get a flat for the whole 500 miles. I didn't even have to add air to the tires. I ended up running them at 25PSI which was welcome on the harsh terrain. I like tubeless so far but it is more of a pain to set up/maintain than tubes. I am getting a new Stan's arch from rim laced up as we speak since the rear did so well and since I have some down time due to my cracked frame.