I've only done it with bass. Supposed to follow the bass drum closely but also noodle around in accordance with other stuff they're doing (i.e. tom fills, hi-hat flourishes, etc.). I usually had a way of pissing off studio-type (semi)pro drummers because they seem to not want you to deviate from the bass drum at all whatsoever, i.e. match it and nothing else as if you were their slave on a dog leash. (Really, they get thrown off too easily; too tightly wound, I think.) Always preferred playing with wildcard improv type guys because me and them could go to town with the greatest of ease and without butting heads, and it would be free of screw-ups to boot.