hi, orlando the way i see it is the 690 is a better bike for trailing, it's lighter, more power and lower than the tenere.
having said that there is no real rear subframe for proper luggage capacity, poor headlamp, poor wind protection, small tank, the bike is more focused at offroading not for all round commuting, overlanding or even two up touring, so what are your needs or expectations?
yep there are products to turn the 690 into a rally/ overlander, tho if jennys well prepared and highly spec'd bike is out of your budget buying a 690 and kitting it out will be madness. have you looked at what jens bike has to offer?
btw i regularly offroad along side 690's, me and the ten hold our own and don't need a van for riding in places like the s of france

or events in places like africa