Certainly not me.
Our trio had a little wake up call recently when we listened to some tracks we recorded during a recent concert...
...we rush...a lot!
I mean, in jazz you're supposed to play on the "front side" of the beat, but this was pretty ridiculous!
We spent the last rehearsal with a metronome blasting through our keyboardist's amp. It was a very enlightening (and even somewhat fruitful) exercise. I'm certainly using a metronome a lot more when I practice!
My drummer sits in with the local symphony for some concerts. The guy really does have some chops...as does my keyboardist. But--we have our own problems with the pulse.
Practicing with a metronome is a good thing. Practicing with a metronome with your band
can be really interesting too.
Just don't get too mercenary about it. There's a Spyro Gyra recording someplace that starts with repeated 8th notes on mallet percussion--then the drummer comes in and you realize: "hey...the mallet percussionist was dragging a bit!"
Guess what I'm trying to say is that it's harder than you'd think. Yes, work on tempo, but don't forsake keeping in a groove with your drummer while you're chasing that elusive perfection!