I have duo'ed Rottenheart with my questing buddy on 4 combos so far: minstrel/hunter, LM/warden, hunter/LM, and guard/minstrel. Hectic? Sure, but we completed it fully mounted. Once my buddy fell into the Eaves, but once we realized that was possible, it was pretty easy to keep a safe distance away. The fights are always long and a few times one of us will die, but the rez circle is a stone's throw away, so we just come back and keep going. The most annoying (for me) was on my guard. They sure do like to knock you back or yank you forward. I felt like a pingpong ball...
As for Varg, I find that to be a pretty easy area. I lead them down the path away from Balewood a very short distance (roughly parallel to the stable camp) and just run circles around them. Only slightly challenging solo -- piece of cake duo'ed with my questing buddy.
Despite what that update says, we already have unmounted warbands in the game that were created back when that update was originally posted. Quite a few of them actually. Without literally checking, I'd say probably close to half of all the warbands in East Rohan are unmounted, actually, considering the various troll/warg/drake/etc combinations that exist. And even some that are mounted are sometimes half-and-half, if I remember correctly. *shrug*
Originally Posted by Elrantiri
R5 100 GRD Marevayave - Leader of Riddermarked For Death
R8 100 MNS Fayah/100 LM Siennah/100 HNT Dinenol/102 RK Dhurik
100 CHN Alachas/85 CPT Dinfaerien/60 BUR Dhax/35 WDN Godoric
R9 105 MNS Fayeh (alt Wilya) - Lonely Mountain Band @ Landroval