Similar to MrLocksmith...
Platform in the back of my FJC. Simple storage/sleeping platform for any type of travel.
I found that RTTs were also too expensive, too high off the ground for my usage - descent in the darkness for a nature break.
Prefer being inside my rig, comfortable, and protected from the elements. Especially when the elements conspire (wind, rain, snow).
Actually convinced a friend to go the same route and ditch the RTT.
Easier to organize - less to set up/take down. Just pick up and go....