I just run them thru the PA with everything else and it works well for us.
I have been using an Alesis DM10 live, but just switched to Roland TD20 before Christmas. First gig with this kit will be Feb 2nd. However practicing with the band is much better already. TD20KX V-Pro into Laney AH300 (300W, 15" + HF Horn) for my backline and monitoring, also feeding my earpieces, as well as a feed direct from TD20 into the PA.