in the late 80s, BC changed a bunch of the trailer regulations, and restriction 20 was borne from the guys that still wanted big utility trailers. when the RV industry got bigger, they went to restriction 51 - the house trailer endorsement.
RV dealers don't tell you about it when they sell you a large trailer - they know about it - but just don't tell you for fear of losing the sale.
I think its a good idea. I helped a buddies dad get ready for his - he had been RVing for many years, but this was his first "big" trailer. they spend 6 months south, and only 3 months at thier Vancouver Island home.
His biggest comments were that he liked how the checklist comment allowed him to have a good mental preparation to make sure all was good before he set out on the road.
Its significantly easier than BCs commercial test - trust me. Unless you happen to be close to the guys that will give you the "nudge nudge wink wink" for the right $$. (not that there have been more than 2 or 3 guys busted for selling licences/experience letters out there recently)
06 Wilderness 2952BS
03 Ram 3500, CTD, Crew Cab, 4X4, DRW, 6 spd, pacbrake, aFe stage 1 mega cannon with Torq tube.