Personally, I don't see the allure of a tour bike with discs, as the disc mounts tend to impede the mounting of racks and fenders. Yes, there is hardware available to get around this, but such things lead to bending stuff and general "effing around", which doesn't appeal to me. Couple this with the fact that they don't make a dropbar hydro disc, and that you are stuck with just the avid shortpull cable discs OR wierd tektro longpull drop levers, and you're looking at even more headache. Of course, cable discs need constant tuning, as heat will warp the rotors. It ain't a lot of work, but it isn't something I'd want to do on tour. Perhaps your plan is to run some sort of "alt bars" or risers, which would allow for hydros to be fitted, but you're kinda "hosed" (sorry bout the pun) if your hydros fail on tour. I prefer the versatility of dropbars for a bike of this sort, anyway, but the world don't move to the beat of just one drum.
Anyway, I look at the la cruz, and i think it's kinda cool for what it is (jack-of-all-trades, master of none type of bike), but i think i'd sooner try the Fargo (which is designed to be a tourish thing) or an one-on with the slot dropouts (which solve the discs-with-racks-n-fenders problem, in the back at least) because it's cheap and you won't weep if you decide that a disc tour bike aint for you. Heck, it's a good mountain bike so you'll have that going for you. You could get a slot-drop inbred 29er, which would have braze-ons for carriers, and massive tire clearance, with a kona project2 29er fork, and you'd save $250. With that, you could afford to powdercoat it orange and still pocket $100 for something nice...
I guess, in a nutshell, i could see converting a la cruz to a tour-worthy bike, if you already had one in the shed and you felt a burning need to build a tourbike, but couldn't afford a new frame. But, at $600, and with so many compromises necessary, why would you buy a la cruz to make a touring rig out of it?