Yeah I know this hobby will always involve some repairs hopefully all minor. I know our XKs as is CAN make it through blues/blacks but I think that is truely pushing this vechicle to its max offroad capabilities as far as rock crawling goes (Talking about 2" and 32s). Now this just might be my conservative self talking and not wanting big damage on my rig but I am not sure about exploring blues/blacks with my XK. Again, this is my only vechicle to get me back and forth to work. If I had my XK paid off and a seperate DD then I'm sure I'd go on blues/blacks without hesitation.
This is only my personal opinion from the two times I've gone to RC with you guys. I know most of you have much more experience with this hobby as well as the abilitity to pretty much fix anything.
EDIT: I also agree with sliders no matter what trail your doing :P just to make that a note