In the age of ipads and smart phones, drummers don't need to bring out a full-on laptop for notes or a click track. Most drummers have metronomes that fit in their pockets. I have a click track app on my iphone that I use live.
Bands will tell you all kinds of stories but at the end of the day, it's cheating. As for me, I run a lot of my sounds from a Macbook Pro. But I'm a keyboard player, not a drummer. lol My keyboards are connected directly to my laptop, which is where all of my pianos, strings, etc. come from.