I believe the best way to deal with them is on the ground. So I would use any technique from suri-waza.
Tactically, I would disagree. Groundwork is the strength of bjj, so choosing to engage on the ground with a bjj'er would be similar to wanting to box with a boxer. I wouldn't recommend that, myself.
In my own experience, swari-waza is not an effective way to counter bjj, nor would be attempting to apply submission holds from a inferior position which I think was suggested earlier. Of course, ymmv.