Coooommpppp caaaammmmmmms...
Whatcha talkin bout?
Tee hee!
Degree The Cam...As you said, and find out where you are at 
Always good advice, and ALWAYS DO THIS! Every time I've installed a cam, granted, only on one boat engine, but in the past, had issues with the timing sets. That's why they make the offset keys and cam gears with multiple keyways.
Think of it this way. The cam maker's equipment might be off a degree or two any given day, + or -, so could the equipment making the cam gear or the separate piece of equipment making the crank gear. Figure a tolerance of maybe 2% (And that is being generous, prolly more like 5%, but just for argument), let alone the keyway on your crank could be off quite a bit (It was made by the same guys panhandling money from Congress).
Their Q/C department should be able to quote their tolerance, but it is just that, a tolerance, which means every piece coming off is off from what they say it is.
Now you've got a very real possibilty of a 6% error (in reality, up to 15%, maybe more including the factory or aftermarket crankshaft), in critical valve timing by following the standard keyway timing method. That's nuts on a performance engine.
Degree every cam every time. Just my .02.
Ray