Yes I have airbags on my DRW! I put them on just to try and see if they made a difference. I pull a 15k 5er and was just curious. I put them on and it made a world of difference. most all of the bouncing caused by 5ers is gone! When on uneven roads, I put a little more air in and the chucking goes away. I liked them so much I even put a Viair 10007 onboard air system on it.(write up on rv.net and FTE). Funny thing is, it helped the 'empty' ride as well with about 12psi in the bags. On the road usually around 30-35 psi to keep things very smooth. No more harshness to the ride. I know that harshness is subjective, but I won't ever tow heavy again without them. The suspension components such as springs will last longer and not get fatigued so quickly either. As stated above, I can adjust mine on the fly which is incredibly nice due to changing road conditions. Much more stable of a ride, even with dual rear wheels. I once was skeptical too, but I gave it a shot and haven't looked back!
2012 Sandpiper 365SAQ weighing @ 15k, Onan, 2nd air, slide toppers, TST
2013 F350 6.7L Lariat 4x4 CC DRW,Viair 1007, Ride-Rites, Edge CTS, B&W
2001 Chevy 3500CC DRW 4x4, 8.1L, 4.10 gears w/ Detroit TrueTrac
2001 Ford Excursion Limited 4x4 7.3L,V/B Spring Mod, ProComps, Hellwig Swaybar, & other 'Necessities'