Had a close look at the 'accessory frame' on a show AT at my Honda dealer (15 minutes on the bicycle from my house). Honda clearly does not mention it a crash bar, but a frame for installing accessories.
The steel tubes may be strong enough, but the mounting to the bike is very flimsy. With moderate force by hand you can push the frame towards the tank. Useless for protection.
The SW-Motech looks better in my opinion, but I think crash protection by any crash bar will be very little. It is more for the looks and for the mounting of accessories of course.
(CRF1000LAD, CRF Rally Red, Zumo390)