I think it's fairly safe to be able to guarentee that you will never regret purchasing a CF Military, over the standard military with variation black blade.
As others have pointed out, the CF is a limited run, and is already somewhat difficult to obtain, let alone in several months time.
It is also the first of the Spyderco's to incorporate peel-ply carbon fiber scales.
In terms of the black-bladed Military, it is somewhat of a more standard Military, and should be more easily found, more so than the CF version.
The black coating is indeed more susceptible to damage, whether it be light scuff marks, scratches, chipped or flaked coatings, or what have you.
Overall, the CF Spyderco's are highly desirable, and a limited sprint run of a classic, workhorse of a Spyderco, and in the ultra-grippy peel-ply carbon fiber,.... what more is there to say ???,... other than you should decide sooner rather than later, for if you do agree and succumb to the temptation of that stunningly-attractive-CF-scaled-Military,.....
.....than you better be quick,....
'cause those gems are certainly being snatched up!