I have a 2001 Coachmen 24' class C and a 2004 Suzuky Grand Vitara 4X4, I have also towed my 88 Montero 4X4 with and with out brakes, today I would not tow either with out an auxiliary brake system, there have been a number of instances where an idiot has made me stop or slow down both on the interste and in town, having the toad brakes alowed me to stop or slow down in a shorter distance.
You have opened a can of worms with this posting, there are those that use brakes and there are those that do not, I will say that it is up to the individual and how comfortable they are with theire set ups.
Maybe you can one day, borrow one unit that is self contained from a fried and test your units and so determin if you want to have one or not.
navegator