Yeah, I know Dave, but some of the fields I shoot at are dirt, and I'd rather clean dirt off a filter than my front element. It's kinda hard to take the front element off and run it under some water. Lazyness ftw.
The EF 85 F/1.8 is probably going to be my next purchase, after an EF wide-medium zoom... I can't use my EF-S 18-55mm IS that came with my XSi on my 1D unfortunately. Not too big of a deal since I wanted a new lens anyways, but it has now become a necessity.