As per this question, in the movies, they don't show blood on Wolverine's claws (because MPAA ratings would suffer otherwise).
The implication seems to be that this is endemic to movies, and not the case in comics.
Is that the case? Do the comics routinely show blood, both in general when Wolverine stabs/slashes people, and most especially, on his claws?
Any era answer will do, but I'm interested in "mainstream" X-men or wolverine ones, not some extra edgy/gritty niche arcs.
A negative answer should have some proof from out-of-universe statements from marvel-associated people. A positive answer should least (if possible give a screenshot/thumbnail) of at least 2-3 distinct examples from different comics/eras.