I would be wary of tubliss in a rally for the simple reason if you ding your rim hard (Like I always seem to do), you will be screwed because you cant get a seal.
If it werent for that I think tubliss would be great.
Dreaming of Dakar
Everyone has a max speed, 90% of that max speed is much safer and easier, and if that 90% speed isn't fast enough at Dakar, you enter the snowball. - neduro