I use MIDI for my drums, but over the last few years I have been teaching myself the basic coordination of drumming.
I don't own a drumkit, I simply sit on the train tapping my hands and feet to the music to pass the time. I have defintelty improved, especially with the speed and timing of my feet. To the extent that recently I went over to a friends, who owns a drumkit, sat down at the drums, and started playing. That was the first time I had sat at a kit in 13 years.
Of course, I can't do any crazy drum rolls or anything like that for shit, as I'm sure you need to become accustomed to a kit for that, which I'm not. But I can hold a beat, just about manage a few paradiddles on a double kick, and I can play better than the drummer I was in a band with about 6 or 7 years ago, who had been playing the drums for about 7 years. But then he was one of those people that just either didn't have it, or was too arrogant to see a need for any self improvement. He was shit. To the point that I had to keep time as the guitarist.
Anyway, if you have a good sense of rhythm and some coordination, you won't have too much of a problem. My philosophy with any instrument is that they are easy to pick up, but hard to master.