I think this'll be an on and off thing for me, Limbo - mostly if and when clients request it. Or I suggest it - if I'm doing a site, I may offer to do business cards and letterhead as well, for example.
I don't have InDesign, yet. However, I've been considering buying the Creative Suite Standard (an $800 investment), which is (of course) Photoshop, Illustrator, and InDesign. This should cover all my needs for web development and the basic sorts of print projects I can foresee myself doing. I do have Illustrator, but it's a copy from a friend for the time being - since I don't use it too often (I know, I know, I shouldn't...which is why I think I'll buy the standard suite at some point in the near-ish future).
I do not have direct access to pantone refs. Although, I do know several established graphic designers who probably do - and most print shops should have them as well. With the small amount of print work I'll be doing, it'll be enough of a solution.