[Trowa figured Duo would be able to keep up at least for a while. After that might be another story simply because Trowa did this more often. However, unless Duo had been slacking, he was no slouch at this sort of thing]
Generally I have no problem doing this. Of course be careful going over things. Don't want the wardens deciding we've committed property damage. Following is probably the better option because while there aren't a lot of people, there are bots and its better to have multiple directions open to avoid them.